[User]
A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alone. It is independent.
after we pick up Kevin from work
The clause cannot stand alone. It is dependent.
A simple sentence is made up of a single independent clause.
Ben and I spent all day relaxing by the pool.
Some simple sentences have introductory phrases, but the introductory phrase is part of the predicate.
In the winter, Ben usually wears his heavy coat.
Ben usually wears his heavy coat in the winter.
A compound sentence is made up of two independent clauses joined by a coordinating conjunction such as and, but, or, or so.
We saw a flash of lightning, and seconds later we heard the rumble of thunder.
A complex sentence is made up of an independent clause and a dependent clause. The dependent clause usually begins with a subordinating conjunction such as after, although, as, because, before, if, since, unless, until, when, or while.
If she ever gets the chance, Terri would love to visit the Egyptian pyramids.

Question:
Which is a complex sentence?

0. Because the leaves blocked the intense sun, it was cool underneath the forest canopy.
1. Her dog happily fetched his tennis ball from the muddy puddle and eagerly waited for her to throw it again.

[Assistant]
The first sentence is the complex sentence. It is made up of an independent clause and a dependent clause. The dependent clause begins with the subordinating conjunction because.
Because the leaves blocked the intense sun, it was cool underneath the forest canopy.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.

Question:
Is the following trait inherited or acquired?
Jackson has a scar on his left elbow.

0. inherited
1. acquired

[Assistant]
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
Therefore my final answer is: 1


[User]
An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the kilometer.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving for the same amount of time. The object that is moving the fastest will go the farthest distance in that time. It is moving at the highest speed.

Question:
Compare the motion of three cars. Which car was moving at the highest speed?

0. a car that moved 150kilometers south in 5hours
1. a car that moved 330kilometers east in 5hours
2. a car that moved 250kilometers north in 5hours

[Assistant]
Look at the distance each car moved and the time it took to move that distance. The direction each car moved does not affect its speed.
Notice that each car moved for 5 hours. The car that moved 330 kilometers moved the farthest distance in that time. So, that car must have moved at the highest speed.
Therefore my final answer is: 1


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.

Question:
Based on this information, what is Jack's genotype for the leg color gene?

0. ll
1. yellow legs

[Assistant]
An organism's genotype for a gene is its combination of alleles for that gene. Jack has two alleles for yellow legs (l). So, Jack's genotype for the leg color gene is ll.
Therefore my final answer is: 0


[User]
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I see it, I think
of you.
With love,
Rory

Question:
Which greeting is correct for a letter?

0. Dear Mrs. Joyce,
1. Dear Mrs. joyce,

[Assistant]
The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Mrs. Joyce is capitalized because it is a proper noun.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.

Question:
Is the following trait inherited or acquired?
Haley can drive a car.

0. acquired
1. inherited

[Assistant]
Humans are not born knowing how to drive a car. Instead, many people learn how to drive when they are older. So, driving is an acquired trait.
Therefore my final answer is: 0


[User]
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vague pronoun references can be corrected in one of two ways:
1. Replace the pronoun with its correct antecedent:
When Lisa and Kim finally landed, Lisa breathed a sigh of relief.
2. Rewrite the sentence:
Lisa breathed a sigh of relief when she and Kim finally landed.
A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent.
They say that this nail polish dries in less than five minutes.
The pronoun they is used without its antecedent, so the meaning of the sentence is unclear.
This problem can be fixed by replacing the pronoun with its missing antecedent.
The advertisements say that this nail polish dries in less than five minutes.

Question:
Which of the following contains a vague pronoun reference?

0. The Hardings make delicious pies; Julia was delighted to find them at the farmers' market.
1. Julia was delighted to find the Hardings' delicious pies at the farmers' market.

[Assistant]
The second answer choice contains a vague pronoun reference. The pronoun them could refer to the Hardings or delicious pies.
The Hardings make delicious pies; Julia was delighted to find them at the farmers' market.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clear.
Julia was delighted to find the Hardings' delicious pies at the farmers' market.
Therefore my final answer is: 0


[User]
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells. Some examples of properties are shiny, hard, fragile, and stretchy.
For example, a shiny material reflects a lot of light. A fragile material breaks when you drop it.

Question:
Which is the scratchiest?

0. nylon shorts
1. asphalt road
2. paper tissue

[Assistant]
Scratchy is a property. A scratchy material is rough and itchy against your skin.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the asphalt road is the scratchiest. If you touch an asphalt road, it will feel rough and itchy.
Therefore my final answer is: 1


[User]
A simple sentence is a sentence with only one subject and predicate.
The pitcher threw the ball to first base.
A compound sentence is two simple sentences joined by a comma and a conjunction such as and, but, or, or so.
The pitcher threw the ball, and the batter hit it.
Some simple sentences have a compound subject or a compound predicate, but they are not compound sentences.
Anna and James will watch the fireworks tonight.
This simple sentence has a compound subject, Anna and James.
The singers bowed and walked off the stage.
This simple sentence has a compound predicate, bowed and walked off the stage.
Some simple sentences have introductory phrases, but they are not compound sentences. The introductory phrase is part of the predicate.
In the winter, Farmer Ben wears his heavy coat.
This is a simple sentence. There is one subject, Farmer Ben, and one predicate, wears his heavy coat in the winter.

Question:
Which is a simple sentence?

0. Bears eat honeybees, and some birds eat them, too.
1. Tomorrow the price of gas may go up.

[Assistant]
The second sentence is the simple sentence. It has one subject and predicate.
Tomorrow the price of gas may go up.
Therefore my final answer is: 1


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
Some traits, like flower color in pea plants, are controlled by a single gene. Most plants and animals have a genotype made up of two alleles for these traits. These two alleles determine whether an organism is homozygous or heterozygous for the gene.
An organism with two identical alleles for a gene is homozygous for that gene. A pea plant with the genotype FF or ff is homozygous for the flower color gene.
An organism with two different alleles for a gene is heterozygous for that gene. A pea plant with the genotype Ff is heterozygous for the flower color gene.
The types of alleles in an organism's genotype determine the organism's phenotype. Some alleles have types called dominant and recessive. These two types can cause different versions of a trait to appear as the organism's phenotype.
A dominant allele causes its version of the trait to appear even when the organism also has a recessive allele for the gene. In pea plants, the F allele, which causes purple flowers, is dominant over the f allele. A pea plant with at least one F allele will have the F allele's version of the flower color trait. So, a plant with the genotype FF or Ff will have purple flowers.
A recessive allele causes its version of the trait to appear only when the organism does not have any dominant alleles for the gene. In pea plants, the f allele, which causes white flowers, is recessive to the F allele. A pea plant with only f alleles will have the f allele's version of the flower color trait. So, a plant with the genotype ff will have white flowers.

Question:
Based on this information, what is Walker's phenotype for the horns trait?

0. having horns
1. not having horns

[Assistant]
Walker's genotype for the horns gene is hh. Walker's genotype of hh has only h alleles. The h allele is for having horns. So, Walker's phenotype for the horns trait must be having horns.
To check this answer, consider whether Walker's alleles are dominant or recessive. The allele for having horns (h) is recessive to the allele for not having horns (H). This means H is a dominant allele, and h is a recessive allele.
Walker's genotype of hh has only recessive alleles. An organism with only recessive alleles for a gene will have the recessive allele's version of the trait. So, Walker's phenotype for the horns trait must be having horns.
Therefore my final answer is: 0


[User]
Question:
Is the following statement true or false?
The cytoplasm of a plant cell is made mostly of water.

0. true
1. false

[Assistant]
The cytoplasm of a plant cell is made mostly of water.
This statement is true. All cells have cytoplasm. The cytoplasm has many cell parts inside it, but it is made mostly of water.
Therefore my final answer is: 0


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups, or gallons.
As the diagram shows, there are 8 fluid ounces in 1 cup and 16 cups in 1 gallon. So, 1 fluid ounce is less than 1 cup and much less than 1 gallon.
A glass of milk has a volume of about 8 fluid ounces, or 1 cup. A jug of milk has a volume of 1 gallon.

Question:
What is the volume of a jar of baby food?

0. 4 cups
1. 4 fluid ounces
2. 4 gallons

[Assistant]
The best estimate for the volume of a jar of baby food is 4 fluid ounces.
4 cups and 4 gallons are both too much.
Therefore my final answer is: 1


[User]
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vague pronoun references can be corrected in one of two ways:
1. Replace the pronoun with its correct antecedent:
When Lisa and Kim finally landed, Lisa breathed a sigh of relief.
2. Rewrite the sentence:
Lisa breathed a sigh of relief when she and Kim finally landed.
A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent.
They say that this nail polish dries in less than five minutes.
The pronoun they is used without its antecedent, so the meaning of the sentence is unclear.
This problem can be fixed by replacing the pronoun with its missing antecedent.
The advertisements say that this nail polish dries in less than five minutes.

Question:
Which of the following contains a vague pronoun reference?

0. Rachel said that she couldn't go to the film festival with her sister because of final exams.
1. Rachel told her sister that she couldn't go to the film festival because of final exams.

[Assistant]
The first answer choice contains a vague pronoun reference. The pronoun she could refer to Rachel or her sister.
Rachel told her sister that she couldn't go to the film festival because of final exams.
The second answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clear.
Rachel said that she couldn't go to the film festival with her sister because of final exams.
Therefore my final answer is: 1


[User]
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both more thermal energy and a higher temperature.

Question:
Which object has more thermal energy?

0. a 5-kilogram block of copper at a temperature of 95C
1. a 5-kilogram block of copper at a temperature of 50C

[Assistant]
The two blocks of copper have the same mass but different temperatures. Since the 95C block is hotter than the 50C block, it has more thermal energy.
Therefore my final answer is: 0


[User]
A force is a push or a pull that acts on an object. Every force has a direction and a magnitude, or strength. If two forces act on an object in opposite directions, the forces are called opposing forces.
When opposing forces have the same magnitude, they are balanced. If all the forces on an object are balanced, there is no net force on the object.
When opposing forces have different magnitudes, the forces are unbalanced. If any forces on an object are unbalanced, there is a net force on the object.

Question:
Assume all other forces on Barbara are balanced. Which statement describes the forces on Barbara?

0. The forces are balanced, so there is no net force on Barbara.
1. The forces are unbalanced, so there is a net force on Barbara.

[Assistant]
To determine if there is a net force on Barbara, look at the forces:
Earth's gravity is pulling Barbara down with a force of 600 N.
The seat of the cart is pushing Barbara up with a force of 1,200 N.
The forces are in opposite directions, and the forces have different magnitudes: 600 N and 1,200 N. This means that the forces are unbalanced, so there is a net force on Barbara.
Therefore my final answer is: 1


[User]
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I see it, I think
of you.
With love,
Rory

Question:
Which closing is correct for a letter?

0. Best wishes,
Marie
1. Best Wishes,
Marie

[Assistant]
The first closing is correct:
Its first word is capitalized, and it ends with a comma.
Therefore my final answer is: 0


[User]
There are four kinds of sentences.
A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period.
I have an older brother and a younger sister.
An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark.
How tall are you?
An imperative sentence is a command. It makes a request or tells someone to do something. An imperative sentence usually ends with a period. If the command shows strong feeling, it ends with an exclamation point.
Read the first chapter by next week.
Look out for that car!
An exclamatory sentence is like a statement, but it shows surprise or strong feeling. An exclamatory sentence always ends with an exclamation point.
Some whales are over ninety feet long!
I can't wait until tomorrow!

Question:
What kind of sentence is this?
Does Eve prefer pizza or pasta?

0. interrogative
1. imperative

[Assistant]
The sentence asks something, and it ends with a question mark. It is an interrogative sentence.
Therefore my final answer is: 0


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
Some traits, like flower color in pea plants, are controlled by a single gene. Most plants and animals have a genotype made up of two alleles for these traits. These two alleles determine whether an organism is homozygous or heterozygous for the gene.
An organism with two identical alleles for a gene is homozygous for that gene. A pea plant with the genotype FF or ff is homozygous for the flower color gene.
An organism with two different alleles for a gene is heterozygous for that gene. A pea plant with the genotype Ff is heterozygous for the flower color gene.
The types of alleles in an organism's genotype determine the organism's phenotype. Some alleles have types called dominant and recessive. These two types can cause different versions of a trait to appear as the organism's phenotype.
A dominant allele causes its version of the trait to appear even when the organism also has a recessive allele for the gene. In pea plants, the F allele, which causes purple flowers, is dominant over the f allele. A pea plant with at least one F allele will have the F allele's version of the flower color trait. So, a plant with the genotype FF or Ff will have purple flowers.
A recessive allele causes its version of the trait to appear only when the organism does not have any dominant alleles for the gene. In pea plants, the f allele, which causes white flowers, is recessive to the F allele. A pea plant with only f alleles will have the f allele's version of the flower color trait. So, a plant with the genotype ff will have white flowers.

Question:
Based on this information, what is Sandy's phenotype for the tail spots trait?

0. a spotted tail
1. an unspotted tail

[Assistant]
Sandy's genotype for the tail spots gene is ii. Sandy's genotype of ii has only i alleles. The i allele is for an unspotted tail. So, Sandy's phenotype for the tail spots trait must be an unspotted tail.
To check this answer, consider whether Sandy's alleles are dominant or recessive. The allele for a spotted tail (I) is dominant over the allele for an unspotted tail (i). This means I is a dominant allele, and i is a recessive allele.
Sandy's genotype of ii has only recessive alleles. An organism with only recessive alleles for a gene will have the recessive allele's version of the trait. So, Sandy's phenotype for the tail spots trait must be an unspotted tail.
Therefore my final answer is: 1


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.

Question:
What information supports the conclusion that Hector inherited this trait?

0. Hector's mother has blue eyes. She passed this trait down to Hector.
1. Hector likes to wear a blue sweater to match his blue eyes.

[Assistant] Therefore my final answer is: 0


[User]
Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backbone. In fact, invertebrates do not have any bones! Some invertebrates have an outer cover on their body called an exoskeleton. Other invertebrates have a soft body.

Question:
Select the vertebrate.

0. golden frog
1. Caribbean reef octopus
2. honey bee
3. weaver ant

[Assistant]
A golden frog is an amphibian. Like other amphibians, a golden frog is a vertebrate. It has a backbone.
A weaver ant is an insect. Like other insects, a weaver ant is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other octopuses, a Caribbean reef octopus is an invertebrate. It does not have a backbone. It has a soft body.
A honey bee is an insect. Like other insects, a honey bee is an invertebrate. It does not have a backbone. It has an exoskeleton.
Therefore my final answer is: 0


[User]
Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backbone. In fact, invertebrates do not have any bones! Some invertebrates have an outer cover on their body called an exoskeleton. Other invertebrates have a soft body.

Question:
Select the vertebrate.

0. trapdoor spider
1. nautilus
2. red-headed poison frog
3. golden orb-weaver

[Assistant]
A nautilus is a mollusk. Like other mollusks, a nautilus is an invertebrate. It does not have a backbone.
Like other spiders, a golden orb-weaver is an invertebrate. It does not have a backbone. It has an exoskeleton.
Like other spiders, a trapdoor spider is an invertebrate. It does not have a backbone. It has an exoskeleton.
A red-headed poison frog is an amphibian. Like other amphibians, a red-headed poison frog is a vertebrate. It has a backbone.
Therefore my final answer is: 2


[User]
In a title, capitalize the first word, the last word, and every important word in between.
The Wind in the Willows James and the Giant Peach
These words are not important in titles:
Articles, a, an, the
Short prepositions, such as at, by, for, in, of, on, to, up
Coordinating conjunctions, such as and, but, or

Question:
Which correctly shows the title of a book?

0. Starry River of the Sky
1. Starry river of the Sky

[Assistant]
Capitalize the first word, the last word, and every important word in between. The words of and the are not important, so they should not be capitalized.
The correct title is Starry River of the Sky.
Therefore my final answer is: 0


[User]
Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials.
A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells.

Question:
Which is scratchier?

0. wood bat
1. burlap sack

[Assistant]
Scratchy is a property. A scratchy material is rough and itchy against your skin.
Look at each picture, one at a time. Imagine touching the material shown in each picture.
Of the choices, the burlap sack is scratchier. If you touch burlap, it will feel rough and itchy.
Therefore my final answer is: 1


[User]
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vague pronoun references can be corrected in one of two ways:
1. Replace the pronoun with its correct antecedent:
When Lisa and Kim finally landed, Lisa breathed a sigh of relief.
2. Rewrite the sentence:
Lisa breathed a sigh of relief when she and Kim finally landed.
A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent.
They say that this nail polish dries in less than five minutes.
The pronoun they is used without its antecedent, so the meaning of the sentence is unclear.
This problem can be fixed by replacing the pronoun with its missing antecedent.
The advertisements say that this nail polish dries in less than five minutes.

Question:
Which of the following contains a vague pronoun reference?

0. Jim plans to travel around Europe with his brother after he graduates.
1. After Jim graduates, he plans to travel around Europe with his brother.

[Assistant]
The second answer choice contains a vague pronoun reference. The pronoun he could refer to Jim or his brother.
Jim plans to travel around Europe with his brother after he graduates.
The first answer choice shows a possible correction for the vague pronoun reference. The text has been rewritten so that the meaning is clear.
After Jim graduates, he plans to travel around Europe with his brother.
Therefore my final answer is: 0


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using customary units, mass may be written with units of ounces, pounds, or tons.
There are 16 ounces in 1 pound and 2,000 pounds in 1 ton.
So, 1 ounce is less than 1 pound and much less than 1 ton.
A slice of bread has a mass of about 1 ounce, while a can of beans has a mass of about 1 pound. A small car has a mass of about 1 ton.

Question:
What is the mass of a passenger airplane?

0. 50 pounds
1. 50 tons
2. 50 ounces

[Assistant]
The best estimate for the mass of a passenger airplane is 50 tons.
50 ounces and 50 pounds are both too light.
Therefore my final answer is: 1


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Mass is a measurement of how much matter something contains.
There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms.
There are 1,000 grams in 1 kilogram. So, 1 gram is much less than 1 kilogram.
A paper clip has a mass of about 1 gram, while a textbook has a mass of about 1 kilogram.

Question:
What is the mass of a bicycle?

0. 8 grams
1. 8 kilograms

[Assistant]
The better estimate for the mass of a bicycle is 8 kilograms.
8 grams is too light.
Therefore my final answer is: 1


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
When you are using customary units, length may be written with units of inches, feet, yards, or miles.
There are 12 inches in 1 foot, and 3 feet in 1 yard. There are 5,280 feet in 1 mile.
A football is about 1 foot long. A football field is 100 yards long.

Question:
How long is a tennis racket?

0. 20 miles
1. 20 yards
2. 20 feet
3. 20 inches

[Assistant]
The best estimate for the length of a tennis racket is 20 inches.
20 feet, 20 yards, and 20 miles are all too long.
Therefore my final answer is: 3


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
Some traits, like flower color in pea plants, are controlled by a single gene. Most plants and animals have a genotype made up of two alleles for these traits. These two alleles determine whether an organism is homozygous or heterozygous for the gene.
An organism with two identical alleles for a gene is homozygous for that gene. A pea plant with the genotype FF or ff is homozygous for the flower color gene.
An organism with two different alleles for a gene is heterozygous for that gene. A pea plant with the genotype Ff is heterozygous for the flower color gene.
The types of alleles in an organism's genotype determine the organism's phenotype. Some alleles have types called dominant and recessive. These two types can cause different versions of a trait to appear as the organism's phenotype.
A dominant allele causes its version of the trait to appear even when the organism also has a recessive allele for the gene. In pea plants, the F allele, which causes purple flowers, is dominant over the f allele. A pea plant with at least one F allele will have the F allele's version of the flower color trait. So, a plant with the genotype FF or Ff will have purple flowers.
A recessive allele causes its version of the trait to appear only when the organism does not have any dominant alleles for the gene. In pea plants, the f allele, which causes white flowers, is recessive to the F allele. A pea plant with only f alleles will have the f allele's version of the flower color trait. So, a plant with the genotype ff will have white flowers.

Question:
Based on this information, what is this plant's phenotype for the fruit sheen trait?

0. glossy fruit
1. dull fruit

[Assistant]
The cucumber plant's genotype for the fruit sheen gene is ff. The cucumber plant's genotype of ff has only f alleles. The f allele is for glossy fruit. So, the cucumber plant's phenotype for the fruit sheen trait must be glossy fruit.
To check this answer, consider whether the cucumber plant's alleles are dominant or recessive. The allele for dull fruit (F) is dominant over the allele for glossy fruit (f). This means F is a dominant allele, and f is a recessive allele.
The cucumber plant's genotype of ff has only recessive alleles. An organism with only recessive alleles for a gene will have the recessive allele's version of the trait. So, the cucumber plant's phenotype for the fruit sheen trait must be glossy fruit.
Therefore my final answer is: 0


[User]
Every substance around you is made of one or more chemical elements, or types of atoms. Substances that are made of only one chemical element are elementary substances. Substances that are made of two or more chemical elements bonded together are compounds.
Every chemical element is represented by its own symbol. For some elements, the symbol is one capital letter. For other elements, the symbol is one capital letter and one lowercase letter. For example, the symbol for the element fluorine is F, and the symbol for the element beryllium is Be.
The symbol for each element in a substance is shown in the substance's chemical formula.
An elementary substance is represented by a chemical formula that contains only one symbol.
The symbol may be followed by a subscript. A subscript is text that is smaller and placed lower than the normal line of text. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript tells you the number of atoms in each molecule.
For example, the chemical formula for the elementary substance oxygen is O2. The formula has a subscript of 2. This subscript tells you that there are two atoms in the molecule represented by this chemical formula.
The chemical element represented by the symbol O is also called oxygen. So, the formula O2 tells you that each molecule of O2 contains two oxygen atoms.
A compound is represented by a chemical formula that contains multiple symbols.
For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. This combination is shown in the compound's chemical formula, BeF2. In the formula, the symbol Be represents one beryllium atom. The symbol F followed by the subscript 2 represents two fluorine atoms.

Question:
Complete the statement.
Copper is ().

0. an elementary substance
1. a compound

[Assistant]
You can tell whether copper is an elementary substance or a compound by counting the number of symbols in its chemical formula. A symbol contains either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for copper is Cu. This formula contains one symbol: Cu. So, the formula tells you that copper is made of one chemical element.
Substances made of only one chemical element are elementary substances. So, copper is an elementary substance.
Therefore my final answer is: 0


[User]
A letter starts with a greeting and ends with a closing. For each one, capitalize the first word and end with a comma. You should also capitalize proper nouns, such as Aunt Sue.
Dear Aunt Sue,
I'm glad you could come to my party, and
thank you for the birthday gift. I could not have
asked for a better one! Every time I see it, I think
of you.
With love,
Rory

Question:
Which greeting is correct for a letter?

0. Dear Grandma Julia,
1. Dear grandma Julia,

[Assistant]
The second greeting is correct:
Its first word is capitalized, and it ends with a comma. Grandma Julia is capitalized because it is a proper noun.
Therefore my final answer is: 0


[User]
A fact is something that can be proved to be true. Facts can be proved by observing, measuring, or studying information.
The flag of the United States has 13 stripes.
This is a fact. It can be proved by looking at the flag and counting the number of stripes.
An opinion is something that a person believes, thinks, or feels. An opinion cannot be proved true.
The flag of the United States is easy to draw.
This is an opinion. People may have different opinions about what makes a flag "easy" to draw.

Question:
Which sentence states a fact?

0. The Vikings came from what are now the countries of Denmark, Sweden, and Norway.
1. The Vikings carried out their raids in a swift, vicious fashion.

[Assistant]
The second sentence states a fact.
The Vikings came from what are now the countries of Denmark, Sweden, and Norway.
It can be proved by reading a history book about Vikings.
The first sentence states an opinion.
The Vikings carried out their raids in a swift, vicious fashion.
Vicious shows what a person believes, thinks, or feels. Another person might have a different opinion about what makes a raid vicious.
Therefore my final answer is: 0


[User]
Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule.
In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form new molecules. The types of molecules in matter before and after a chemical change are always different.
Burning a piece of paper is a chemical change. As paper burns, paper molecules react with oxygen molecules in the air. This reaction breaks the chemical bonds in the molecules. The atoms then relink and form different molecules. For example, carbon dioxide molecules are created when paper burns.
In a physical change, chemical bonds do not break. The types of molecules in matter before and after a physical change are always the same.
A change of state is a type of physical change. For example, water vaporizing is a physical change. Liquid water and water vapor are made of the same type of matter: water.

Question:
Complete the sentence.
Boiling an egg is a ().

0. physical change
1. chemical change

[Assistant]
Boiling an egg is a chemical change. The heat causes the matter in the egg to change. Cooked eggs and raw eggs are made of different types of matter.
Therefore my final answer is: 1


[User]
Question:
Answer the riddle.
I am round.
You need me to see.
I may be blue, green, or brown.
What am I?

0. an eye
1. a head

[Assistant]
An eye is round.
You need an eye to see.
An eye may be blue, green, or brown.
Therefore my final answer is: 0


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.

Question:
Based on this information, what is Lottie's phenotype for the fur length trait?

0. long fur
1. ff

[Assistant]
An organism's phenotype for a trait is its observable version of that trait. Lottie's observable version of the fur length trait is long fur. So, Lottie's phenotype for the fur length trait is long fur.
Therefore my final answer is: 0


[User]
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Greek mythology. Because the sea is constantly changing, to describe something as protean suggests that it is variable or in flux.

Question:
What is the source of the allusion in the sentence below?
Brody got off the mountain by the skin of his teeth.

0. the Bible
1. U.S. history

[Assistant]
The source of the allusion by the skin of his teeth is the Bible.
In the Bible, Job complains to God about his hardships, saying that both strangers and those he loves have turned against him. He says, "My bone cleaveth to my skin and to my flesh, and I am escaped with the skin of my teeth." Scholars have long debated the exact meaning of the phrase, but many claim that Job is saying that he narrowly escaped death.
The allusion by the skin of his teeth means just barely.
Therefore my final answer is: 0


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
Some traits, like flower color in pea plants, are controlled by a single gene. Most plants and animals have a genotype made up of two alleles for these traits. These two alleles determine whether an organism is homozygous or heterozygous for the gene.
An organism with two identical alleles for a gene is homozygous for that gene. A pea plant with the genotype FF or ff is homozygous for the flower color gene.
An organism with two different alleles for a gene is heterozygous for that gene. A pea plant with the genotype Ff is heterozygous for the flower color gene.
The types of alleles in an organism's genotype determine the organism's phenotype. Some alleles have types called dominant and recessive. These two types can cause different versions of a trait to appear as the organism's phenotype.
A dominant allele causes its version of the trait to appear even when the organism also has a recessive allele for the gene. In pea plants, the F allele, which causes purple flowers, is dominant over the f allele. A pea plant with at least one F allele will have the F allele's version of the flower color trait. So, a plant with the genotype FF or Ff will have purple flowers.
A recessive allele causes its version of the trait to appear only when the organism does not have any dominant alleles for the gene. In pea plants, the f allele, which causes white flowers, is recessive to the F allele. A pea plant with only f alleles will have the f allele's version of the flower color trait. So, a plant with the genotype ff will have white flowers.

Question:
Based on this information, what is Boxer's phenotype for the coat pattern trait?

0. solid coloring
1. white spots

[Assistant]
You need to determine Boxer's phenotype for the coat pattern trait. First, consider the alleles in Boxer's genotype for the coat pattern gene. Then, decide whether these alleles are dominant or recessive.
The allele for solid coloring (A) is dominant over the allele for white spots (a). This means A is a dominant allele, and a is a recessive allele.
Boxer's genotype of Aa has one dominant allele and one recessive allele. An organism with at least one dominant allele for a gene will have the dominant allele's version of the trait. So, Boxer's phenotype for the coat pattern trait must be solid coloring.
Therefore my final answer is: 0


[User]
Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is typically used in academic and business writing or when writing directly to an authority figure. It tends to be more courteous and impersonal, avoiding overly familiar or conversational language.
Compare the following sentences.
Informal: Yeah, ostriches can't fly, but I think they're awesome.
More formal: Ostriches may be flightless, but they're remarkable runners.
Most formal: Though flightless, ostriches are remarkable runners.

Question:
Which online professional profile is more formal?

0. Sales professional with strong interpersonal skills.
1. Sales pro who can really sell and is great with people.

[Assistant]
The second online professional profile is more formal. It uses more elevated language (sales professional, strong interpersonal skills). The other professional profile uses imprecise language (really) and abbreviations (sales pro).
Therefore my final answer is: 0


[User]
All living things are made up of cells. Plants, animals, and some fungi have many cells. Other living things are made up of just one cell.
All living things need food and water. Water helps living things break down food and remove waste. Food gives living things energy. They use energy from food to grow and change.
All living things sense changes in their environment. Living things might sense changes by seeing, smelling, hearing, or feeling. Living things can respond to the changes they sense.

Question:
Select the living thing.

0. clownfish
1. beach ball
2. helicopter
3. bracelet

[Assistant]
A helicopter is not a living thing.
A helicopter does not have all the traits of a living thing. It needs energy to fly, but it does not eat food. Helicopters get energy from gasoline or other fuel. They do not grow.
A beach ball is not a living thing.
Beach balls do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A bracelet is not a living thing.
Bracelets do not have all of the traits of living things. They do not grow or respond to their environment. They do not need food or water.
A clownfish is a living thing.
Clownfishes grow and respond to their environment. They need food and water. Clownfishes are made up of many cells.
Therefore my final answer is: 0


[User]
Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange.
Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals without backbones have a hard outer cover. Other animals have a soft body.

Question:
Select the animal that does not have a backbone.

0. painted stork
1. grasshopper

[Assistant]
A grasshopper is an insect. Like other insects, a grasshopper does not have a backbone. It has a hard outer cover.
A painted stork is a bird. Like other birds, a painted stork has a backbone.
Therefore my final answer is: 1


[User]
Vertebrates and invertebrates are both groups of animals.
A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange.
An invertebrate does not have a backbone. In fact, invertebrates do not have any bones! Some invertebrates have an outer cover on their body called an exoskeleton. Other invertebrates have a soft body.

Question:
Select the vertebrate.

0. redback spider
1. curlyhair tarantula
2. harbor seal
3. honey bee

[Assistant]
Like other spiders, a redback spider is an invertebrate. It does not have a backbone. It has an exoskeleton.
A honey bee is an insect. Like other insects, a honey bee is an invertebrate. It does not have a backbone. It has an exoskeleton.
A harbor seal is a mammal. Like other mammals, a harbor seal is a vertebrate. It has a backbone.
Like other tarantulas, a curlyhair tarantula is an invertebrate. It does not have a backbone. It has an exoskeleton.
Therefore my final answer is: 2


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake.
A simile uses like or as to compare two things that are not actually alike.
The cat's fur was as dark as the night.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town.
Onomatopoeia involves using a word that expresses a sound.
The scrambled eggs hit the floor with a splat.
Personification is giving human characteristics to nonhuman things.
The trees danced in the wind.
A pun involves using a word or phrase in a humorous way that suggests more than one meaning.
A great new broom is sweeping the nation.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking down.
Each breakdown is as enjoyable as a punch to the face.

Question:
Which figure of speech is used in this text?
The hum of the computer concerned Oscar. Was the problem with the power supply or the hard drive?

0. onomatopoeia
1. metaphor

[Assistant]
The text uses onomatopoeia, a word that expresses a sound.
Hum represents the sound the computer was making.
Therefore my final answer is: 0


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Alliteration is the repetition of sounds at the beginning of nearby words.
What a lucky little lady you are!
An allusion is a brief reference to something or someone well known, often from history or literature.
"I'd better get home before I turn into a pumpkin!" Lila remarked.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake.
A simile uses like or as to compare two things that are not actually alike.
The cat's fur was as dark as the night.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town.
Onomatopoeia involves using a word that expresses a sound.
The scrambled eggs hit the floor with a splat.
Personification is giving human characteristics to nonhuman things.
The trees danced in the wind.
A pun involves using a word or phrase in a humorous way that suggests more than one meaning.
A great new broom is sweeping the nation.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking down.
Each breakdown is as enjoyable as a punch to the face.

Question:
Which figure of speech is used in this text?
After the stock market crash, many people's financial futures went into free fall.

0. alliteration
1. simile

[Assistant]
The text uses alliteration, the repetition of sounds at the beginning of nearby words.
Financial futures went into free fall repeats the f sound.
Therefore my final answer is: 0


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.

Question:
Based on this information, what is Dolly's genotype for the myotonia congenita gene?

0. having myotonia congenita
1. Mm

[Assistant]
An organism's genotype for a gene is its combination of alleles for that gene. Dolly has one allele for having myotonia congenita (M) and one allele for not having myotonia congenita (m). So, Dolly's genotype for the myotonia congenita gene is Mm.
Therefore my final answer is: 1


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the bus is leaving. That is because the units are missing.
Time is usually measured in units of seconds, minutes, or hours. It takes about 1 second to sneeze and 1 minute to get dressed in the morning. It takes about 1 hour to bake a pie in the oven.
There are 60 seconds in 1 minute. So, 1 second is much less than 1 minute.
There are 60 minutes in 1 hour. So, 1 minute is much less than 1 hour.

Question:
How long does it take to knit a scarf?

0. 8 minutes
1. 8 hours

[Assistant]
The better estimate for how long it takes to knit a scarf is 8 hours.
8 minutes is too fast.
Therefore my final answer is: 1


[User]
Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds.

Question:
Which word does not rhyme?

0. haze
1. spot
2. maze

[Assistant]
The words haze and maze rhyme. They both end with the aze sound.
The word spot does not rhyme. It ends with a different sound.
Therefore my final answer is: 1


[User]
When you review a fellow student's writing, try to make your feedback clear and specific. You can use questions such as the following to guide your feedback:
Ideas and development: Does the writer express a clear main idea and develop it with evidence, examples, and analysis?
Organization: Does the writer order ideas in a clear, logical way so that the ideas build on one another and are easy to follow?
Sentence fluency: Do the writer's sentences vary in structure and length, or does the writing sound choppy, rambling, or repetitive?
Word choice: Does the writer use words accurately and precisely, avoiding excessive repetition or inappropriate language to create clear, effective, and engaging writing?
Grammar and mechanics: Does the writer use accurate spelling, punctuation, and grammar to create writing that is correct and easy to read?

Question:
Read the following text from a student essay. How can the writer best improve his or her ideas and development?
Why is smoking cigarettes bad for your health? Cigarettes contain poisonous substances like carbon monoxide and tar, which can harm every part of your body. Smoking causes heart disease and damages your blood vessels. Eating a diet high in fat, sugar, and salt can also lead to heart disease. A lack of exercise contributes to heart disease, too. Smoking damages your lungs and can cause breathing problems or lung cancer. In fact, it can cause cancer in any organ in your body.

0. by focusing on one main idea
1. by stating the main idea clearly

[Assistant]
The writer could best improve his or her ideas and development by focusing on one main idea.
For example, the writer could remove the underlined text to focus only on the reasons why smoking cigarettes is bad for your health.
Why is smoking cigarettes bad for your health? Cigarettes contain poisonous substances like carbon monoxide and tar, which can harm every part of your body. Smoking causes heart disease and damages your blood vessels. Eating a diet high in fat, sugar, and salt can also lead to heart disease. A lack of exercise contributes to heart disease, too. Smoking damages your lungs and can cause breathing problems or lung cancer. In fact, it can cause cancer in any organ in your body.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.

Question:
Is the following trait inherited or acquired?
Kendrick has naturally black hair.

0. acquired
1. inherited

[Assistant]
Humans do not choose their natural hair color. Some people dye their hair. But this does not change their natural hair color.
Children get their natural hair color from their parents. So, Kendrick's hair color is an inherited trait.
Therefore my final answer is: 1


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.

Question:
Is the following trait inherited or acquired?
Becky has a scar on her right knee.

0. acquired
1. inherited

[Assistant]
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.

Question:
What information supports the conclusion that Ellen acquired this trait?

0. Ellen and her father play the cello together.
1. Ellen learned how to play the cello in music class.
2. Ellen knows how to polish her cello.

[Assistant] Therefore my final answer is: 1


[User]
An object's speed tells you how fast the object is moving. Speed depends on both distance and time.
Distance tells you how far the object has moved. One unit used to measure distance is the mile.
Time tells you how long the object has spent moving. One unit used to measure time is the hour.
Think about objects moving for the same amount of time. The object that is moving the slowest will go the shortest distance in that time. It is moving at the lowest speed.

Question:
Compare the motion of three geese. Which goose was moving at the lowest speed?

0. a goose that moved 210miles south in 5hours
1. a goose that moved 285miles north in 5hours
2. a goose that moved 435miles west in 5hours

[Assistant]
Look at the distance each goose moved and the time it took to move that distance. The direction each goose moved does not affect its speed.
Notice that each goose moved for 5 hours. The goose that moved 210 miles moved the shortest distance in that time. So, that goose must have moved at the lowest speed.
Therefore my final answer is: 0


[User]
Some animals have a backbone. The backbone is made of many bones in an animal's back. An animal's backbone helps connect the different parts of its body. In the drawings below, each animal's backbone is colored orange.
Other animals do not have a backbone. In fact, these animals don't have any bones! Some animals without backbones have a hard outer cover. Other animals have a soft body.

Question:
Select the animal that has a backbone.

0. gray tree frog
1. curlyhair tarantula

[Assistant]
A gray tree frog is an amphibian. Like other amphibians, a gray tree frog has a backbone.
Like other tarantulas, a curlyhair tarantula does not have a backbone. It has a hard outer cover.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits. Offspring receive their genes, and therefore gain their inherited traits, from their biological parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Parents do not pass acquired traits down to their offspring.

Question:
What information supports the conclusion that Trent acquired this trait?

0. Trent's neighbor taught him how to repair a kite.
1. Trent likes to fly a kite with his younger brother.
2. Trent's friend taught him how to fly a kite.

[Assistant] Therefore my final answer is: 2


[User]
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.

Question:
Select the one animal that has all of the fish traits listed above.

0. Goldfish hatch from eggs with no shells and have scaly skin. They are popular as pets in many countries today. They were first kept as pets by people in ancient China. Goldfish have fins and live underwater.
1. Greater flameback woodpeckers have feathers and two wings. They use their strong beaks to make holes in trees. The woodpeckers use these holes as nests for their eggs, which have white shells.

[Assistant]
To decide if an animal is part of a group, look at the traits of the group.
Fish have the following traits:
They have fins, not limbs.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A goldfish has the following traits:
It has fins, not limbs.
It makes eggs with no shells.
A goldfish has the traits of a fish. A goldfish is a fish.
A greater flameback woodpecker has the following traits:
It has feathers.
It has wings.
It has a beak.
It makes eggs with shells.
A greater flameback woodpecker does not have all of the traits of a fish. A greater flameback woodpecker is a bird.
Therefore my final answer is: 0


[User]
Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Most past-tense verbs are regular. They end in -ed.
Some verbs are irregular in the past tense. You must remember their past-tense forms.
Future tense verbs tell you about something that is going to happen.
All future-tense verbs use the word will.
Present | Past | Future
walk, walks | walked | will walk
go, goes | went | will go

Question:
Which tense does the sentence use?
Akiko teaches Lindsey about customs in Japan.

0. present tense
1. past tense
2. future tense

[Assistant]
The sentence is in present tense. You can tell because it uses a present-tense verb, teaches. The verb ends in -es and tells you about something that is true or happening now.
Therefore my final answer is: 0


[User]
Similes and metaphors are figures of speech that compare two things that are not actually alike.
A simile compares two things by saying that one is like the other. Similes often use the words like and as.
My sister runs like a cheetah.
The sister's running and a cheetah's running are compared using the word like.
A cheetah is known for running fast, so the simile means that the sister also runs fast.
The cat's fur was as dark as the night.
The cat's fur and the night are compared using the word as.
The night is dark, so the simile means that the cat's fur is also dark.
A metaphor compares two things by saying that one of them is the other. Unlike similes, metaphors don't use the word like or as.
The snow formed a blanket over the town.
The snow and a blanket are compared without the word like or as.
A blanket is a large piece of cloth that completely covers a bed. The metaphor makes the reader imagine that the snow becomes a blanket, covering the town completely.
Using similes and metaphors in your writing can help you create an interesting picture for the reader.

Question:
Does the sentence use a simile or a metaphor?
In this desert, the land is as hard as brick.

0. metaphor
1. simile

[Assistant]
In this desert, the land is as hard as brick.
The words land and brick are compared using the word as. So, the sentence uses a simile.
Therefore my final answer is: 1


[User]
Scientists sort animals with similar traits into groups. This is called classification. Classification helps scientists learn about how animals live.
How do scientists classify animals? First, they make observations about an animal. Scientists observe the animal's traits, including its body parts and behavior. Then, scientists compare the animal's traits to other animals' traits. Scientists classify animals with similar traits into a group.

Question:
Select the one animal that has all of the amphibian traits listed above.

0. Red-eye tree frogs lay eggs with no shells. When tadpoles first hatch from the eggs, they live in water. When the tadpoles grow into adults, they live in trees. Adult tree frogs have moist, smooth skin and sticky pads on their toes. The sticky pads help the frogs hold on to leaves.
1. Cardinalfish have scaly skin and live near coral reefs. Cardinalfish lay eggs with no shells and have fins that help them swim underwater.

[Assistant]
To decide if an animal is part of a group, look at the traits of the group.
Amphibians have the following traits:
They spend part of their lives in water and part on land.
They have moist skin.
They make eggs with no shells.
Compare each animal's traits to the group's traits. Select the animal with traits similar to the group's traits.
A red-eyed tree frog has the following traits:
It spends part of its life in water and part on land.
It has moist skin.
It makes eggs with no shells.
A red-eyed tree frog has the traits of an amphibian. A red-eyed tree frog is an amphibian.
A cardinalfish has the following traits:
It has fins, not limbs.
It makes eggs with no shells.
A cardinalfish does not have all of the traits of an amphibian. A cardinalfish is a fish.
Therefore my final answer is: 0


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.

Question:
Based on this information, what is this pea plant's genotype for the pea shape gene?

0. round peas
1. EE

[Assistant]
An organism's genotype for a gene is its combination of alleles for that gene. The pea plant has two alleles for round peas (E). So, the plant's genotype for the pea shape gene is EE.
Therefore my final answer is: 1


[User]
Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Most past-tense verbs are regular. They end in -ed.
Some verbs are irregular in the past tense. You must remember their past-tense forms.
Future tense verbs tell you about something that is going to happen.
All future-tense verbs use the word will.
Present | Past | Future
walk, walks | walked | will walk
go, goes | went | will go

Question:
Which tense does the sentence use?
The passengers will give Derek their tickets.

0. present tense
1. future tense
2. past tense

[Assistant]
The sentence is in future tense. You can tell because it uses will before the main verb, give. The verb tells you about something that is going to happen.
Therefore my final answer is: 1


[User]
Present tense verbs tell you about something that is happening now.
Most present-tense verbs are regular. They have no ending, or they end in -s or -es.
Two verbs are irregular in the present tense, to be and to have. You must remember their forms.
Past tense verbs tell you about something that has already happened.
Most past-tense verbs are regular. They end in -ed.
Some verbs are irregular in the past tense. You must remember their past-tense forms.
Future tense verbs tell you about something that is going to happen.
All future-tense verbs use the word will.
Present | Past | Future
walk, walks | walked | will walk
go, goes | went | will go

Question:
Which tense does the sentence use?
Cole reads an exciting mystery story.

0. present tense
1. future tense
2. past tense

[Assistant]
The sentence is in present tense. You can tell because it uses a present-tense verb, reads. The verb ends in -s and tells you about something that is true or happening now.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.

Question:
What information supports the conclusion that Clara inherited this trait?

0. Clara and her mother both wear their hair in braids.
1. Clara's parents have red hair. They passed down this trait to Clara.

[Assistant] Therefore my final answer is: 1


[User]
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter slow down, the temperature goes down. The matter now has both less thermal energy and a lower temperature.

Question:
Which object has less thermal energy?

0. a bowl of oatmeal at a temperature of 110F
1. a bowl of oatmeal at a temperature of 95F

[Assistant]
The two bowls of oatmeal have the same mass but different temperatures. Since the 95F bowl of oatmeal is colder than the 110F bowl of oatmeal, it has less thermal energy.
Therefore my final answer is: 1


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
Verbal irony involves saying one thing but implying something very different. People often use verbal irony when they are being sarcastic.
Olivia seems thrilled that her car keeps breaking down.
Each breakdown is as enjoyable as a punch to the face.

Question:
What does the verbal irony in this text suggest?
"Sleeping through the rooster's crowing was no problem," Sanjay joked with a yawn.

0. Sanjay slept poorly.
1. Sanjay finds roosters amusing.

[Assistant]
The text uses verbal irony, which involves saying one thing but implying something very different.
Sleeping through the rooster's crowing was no problem ironically suggests that Sanjay slept poorly. Sanjay was tired, so the rooster's crowing was clearly a problem.
Therefore my final answer is: 0


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.
There are 1,000 milliliters in 1 liter. So, 1 milliliter is much less than 1 liter.
A raindrop has a volume of about 20 milliliters, while a large soda bottle has a volume of 2 liters. The flask shown here measures volumes up to 500 milliliters.

Question:
What is the volume of a bathroom sink?

0. 12 milliliters
1. 12 liters

[Assistant]
The better estimate for the volume of a bathroom sink is 12 liters.
12 milliliters is too little.
Therefore my final answer is: 1


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds?
The number 7 on its own does not give you much information about when the bus is leaving. That is because the units are missing.
Time is usually measured in units of seconds, minutes, or hours. It takes about 1 second to sneeze and 1 minute to get dressed in the morning. It takes about 1 hour to bake a pie in the oven.
There are 60 seconds in 1 minute. So, 1 second is much less than 1 minute.
There are 60 minutes in 1 hour. So, 1 minute is much less than 1 hour.

Question:
How long does it take to mow the lawn?

0. 35 seconds
1. 35 minutes

[Assistant]
The better estimate for how long it takes to mow the lawn is 35 minutes.
35 seconds is too fast.
Therefore my final answer is: 1


[User]
A chemical change occurs when new substances are formed from existing substances. This process is called a chemical reaction.
In a chemical reaction, one or more substances change into one or more different substances. During the reaction, the atoms of the original substances are rearranged to form other substances.
The original substances in a chemical reaction are called reactants. These substances react, or go through a chemical change.
The substances that are formed in a chemical reaction are called products. These substances are produced by the chemical reaction.
So, in a chemical reaction, reactants go through a chemical change to form products.

Question:
Complete the sentence.
In this chemical reaction, charcoal is a ().

0. reactant
1. product

[Assistant]
Read the underlined text carefully. Look for information about what happens to charcoal in this chemical reaction.
People have used gunpowder as an explosive for hundreds of years. Gunpowder is a mixture of three different substances: potassium nitrate, charcoal, and sulfur. When these substances are burned together, they release a large amount of heat and gas. In the past, gunpowder was used in muskets and cannons, but today, it is mainly used in fireworks.
The underlined text tells you that when potassium nitrate, charcoal, and sulfur combine, a large amount of heat and gas is released. When potassium nitrate, charcoal, and sulfur react, or go through a chemical change, their atoms are rearranged. Because charcoal reacts in this chemical reaction, charcoal is a reactant.
Therefore my final answer is: 0


[User]
Rhyming words are words that end with the same sound.
The words tip and slip rhyme. They both end with the ip sound.
The words lake and make rhyme. They both end with the ake sound.
The words tip and lake don't rhyme. They end with different sounds.

Question:
Which word does not rhyme?

0. blue
1. frog
2. glue

[Assistant]
The words glue and blue rhyme. They both end with the ue sound.
The word frog does not rhyme. It ends with a different sound.
Therefore my final answer is: 1


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.

Question:
What information supports the conclusion that Julia inherited this trait?

0. Julia and her mother both wear their hair in braids.
1. Julia's parents have red hair. They passed down this trait to Julia.

[Assistant] Therefore my final answer is: 1


[User]
When writing, make sure to avoid vague pronoun references. A vague pronoun reference occurs when a pronoun could refer to more than one possible antecedent.
When Lisa and Kim finally landed, she breathed a sigh of relief.
The pronoun she could refer to either Lisa or Kim, so the meaning of the sentence is unclear.
Vague pronoun references can be corrected in one of two ways:
1. Replace the pronoun with its correct antecedent:
When Lisa and Kim finally landed, Lisa breathed a sigh of relief.
2. Rewrite the sentence:
Lisa breathed a sigh of relief when she and Kim finally landed.
A vague pronoun reference also occurs when they, them, their, theirs, it, or its is used without its antecedent.
They say that this nail polish dries in less than five minutes.
The pronoun they is used without its antecedent, so the meaning of the sentence is unclear.
This problem can be fixed by replacing the pronoun with its missing antecedent.
The advertisements say that this nail polish dries in less than five minutes.

Question:
Which of the following contains a vague pronoun reference?

0. Olivia took the memory card out of the digital camera and put the card in her desk drawer.
1. Olivia took the memory card out of the digital camera and put it in her desk drawer.

[Assistant]
The second answer choice contains a vague pronoun reference. The pronoun it could refer to the memory card or the digital camera.
The first answer choice shows a possible correction for the vague pronoun reference. It has been replaced with the card.
Olivia took the memory card out of the digital camera and put the card in her desk drawer.
Therefore my final answer is: 1


[User]
All solids, liquids, and gases are made of matter. Matter is made up of tiny particles that are always moving. The energy from the motion of these particles is called thermal energy.
Temperature measures how hot or cold matter is. If the particles in matter move faster, the temperature goes up. The matter now has both more thermal energy and a higher temperature.

Question:
Which object has the most thermal energy?

0. an orange at a temperature of 93F
1. an orange at a temperature of 66F
2. an orange at a temperature of 68F

[Assistant]
All three oranges have the same mass but different temperatures. Since the 93F orange is the hottest, it has the most thermal energy.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment. Children do not inherit their parents' acquired traits.

Question:
Is the following trait inherited or acquired?
Diana has a scar on her left hand.

0. acquired
1. inherited

[Assistant]
Children do not inherit their parent's scars. Instead, scars are caused by the environment. People can get scars after they get hurt. So, having a scar is an acquired trait.
Therefore my final answer is: 0


[User]
Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means.
Volume is a measurement of how much space something takes up.
There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters.
There are 1,000 milliliters in 1 liter. So, 1 milliliter is much less than 1 liter.
A raindrop has a volume of about 20 milliliters, while a large soda bottle has a volume of 2 liters. The flask shown here measures volumes up to 500 milliliters.

Question:
What is the volume of a large soup pot?

0. 5 liters
1. 5 milliliters

[Assistant]
The better estimate for the volume of a large soup pot is 5 liters.
5 milliliters is too little.
Therefore my final answer is: 0


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
An idiom is an expression that cannot be understood literally. Its meaning must be learned.
The assignment was a piece of cake.

Question:
What does the idiom in this text suggest?
In such an unfamiliar environment, Nick was a fish out of water.

0. Nick felt out of place.
1. Nick had not visited that location before.

[Assistant]
The text uses an idiom, an expression that cannot be understood literally.
The idiom a fish out of water suggests that Nick felt out of place. A fish out of water is someone out of his or her usual, comfortable environment.
Therefore my final answer is: 0


[User]
An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words.
The protean nature of the disease makes it difficult to diagnose.
The word protean is an allusion to the sea god Proteus in Greek mythology. Because the sea is constantly changing, to describe something as protean suggests that it is variable or in flux.

Question:
What is the source of the allusion in the sentence below?
Brennan's recent behavior made his parents begin to see his friend Edgar as some sort of Svengali.

0. literature
1. modern history

[Assistant]
The source of the allusion Svengali is literature.
In George du Maurier's novel Trilby, Svengali is a hypnotist who exerts such power over the central character that she is suddenly able to sing, which she was unable to do before.
The allusion Svengali means a person with an unduly strong influence over someone else.
Therefore my final answer is: 0


[User]
Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways.
Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned.
Acquired traits are gained during a person's life. Some acquired traits, such as riding a bicycle, are gained by learning. Other acquired traits, such as scars, are caused by the environment.

Question:
What information supports the conclusion that Josie inherited this trait?

0. Josie and her mother both have short hair.
1. Josie's parents were born with wavy hair. They passed down this trait to Josie.

[Assistant] Therefore my final answer is: 1


[User]
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color geneone allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.

Question:
Based on this information, what is this Nile tilapia fish's phenotype for the body color trait?

0. bb
1. a pink body

[Assistant]
An organism's phenotype for a trait is its observable version of that trait. The Nile tilapia fish's observable version of the body color trait is a pink body. So, the fish's phenotype for the body color trait is a pink body.
Therefore my final answer is: 1


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A metaphor compares two things that are not actually alike without using like or as.
The snow formed a blanket over the town.

Question:
What does the metaphor in this text suggest?
Wanda felt a roller coaster of emotions when she heard the news.

0. Wanda had varied feelings.
1. Wanda found the news scary.

[Assistant]
The text uses a metaphor, comparing two things that are not actually alike without using like or as.
The metaphor Wanda felt a roller coaster of emotions suggests that Wanda had varied feelings. A roller coaster has a dramatic mix of ups and downs, and so do Wanda's feelings.
Therefore my final answer is: 0


[User]
There are more than 100 different chemical elements, or types of atoms. Chemical elements make up all of the substances around you.
A substance may be composed of one chemical element or multiple chemical elements. Substances that are composed of only one chemical element are elementary substances. Substances that are composed of multiple chemical elements bonded together are compounds.
Every chemical element is represented by its own atomic symbol. An atomic symbol may consist of one capital letter, or it may consist of a capital letter followed by a lowercase letter. For example, the atomic symbol for the chemical element fluorine is F, and the atomic symbol for the chemical element beryllium is Be.
The atomic symbol for each chemical element in a substance is shown in the substance's chemical formula.
An elementary substance is represented by a chemical formula that contains only one atomic symbol.
The atomic symbol in a chemical formula may be followed by a small number written lower than the symbol. This number is called a subscript. A subscript is included when the atoms in the elementary substance are bonded to form molecules. The subscript shows how many atoms are in each molecule.
For example, the chemical formula for the elementary substance oxygen, O2, has a subscript of 2. This subscript shows that the atomic symbol O represents two atoms. The elementary substance O2 and the chemical element represented by the atomic symbol O are both named oxygen. So, the formula tells you that each molecule of O2 contains two oxygen atoms.
A compound is represented by a chemical formula that contains multiple atomic symbols.
The chemical elements in a compound are bonded together in a fixed ratio. This ratio is shown in a compound's chemical formula.
For example, in the compound beryllium fluoride, there is one beryllium atom for every two fluorine atoms. So, the ratio of beryllium atoms to fluorine atoms is 1 to 2. This ratio is shown in the chemical formula for beryllium fluoride, BeF2. There is no subscript following the atomic symbol Be because that symbol represents one atom. The subscript 2 follows the atomic symbol F to show that the symbol represents two atoms.

Question:
Complete the statement.
Phosphorus trichloride is ().

0. a compound
1. an elementary substance

[Assistant]
You can tell whether phosphorus trichloride is an elementary substance or a compound by counting the number of atomic symbols in its chemical formula. An atomic symbol consists of either one capital letter or a capital letter followed by one or two lowercase letters.
The chemical formula for phosphorus trichloride, PCl3, contains two atomic symbols: P for phosphorus and Cl for chlorine. So, the formula tells you that phosphorus trichloride is composed of two chemical elements bonded together.
Since phosphorus trichloride is composed of multiple chemical elements bonded together, phosphorus trichloride is a compound.
Therefore my final answer is: 0


[User]
Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive.
A euphemism is a polite or indirect expression that is used to de-emphasize an unpleasant topic.
The head of Human Resources would never refer to firing people, only to laying them off.
Hyperbole is an obvious exaggeration that is not meant to be taken literally.
I ate so much that I think I might explode!
An oxymoron is a joining of two seemingly contradictory terms.
Some reviewers are calling this book a new classic.
A paradox is a statement that might at first appear to be contradictory, but that may in fact contain some truth.
Always expect the unexpected.

Question:
Which figure of speech is used in this text?
The city of Westford is currently experiencing a minor crisis. Its sanitation workers are on strike, and the garbage is piling up in the streets.

0. paradox
1. oxymoron

[Assistant]
The text uses an oxymoron, a joining of two seemingly contradictory terms.
Minor crisis is a contradiction, because minor means small or insignificant, and a crisis is a large problem.
Therefore my final answer is: 1


[User]
Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions.
Formal writing is typically used in academic and business writing or when writing directly to an authority figure. It tends to be more courteous and impersonal, avoiding overly familiar or conversational language.
Compare the following sentences.
Informal: Yeah, ostriches can't fly, but I think they're awesome.
More formal: Ostriches may be flightless, but they're remarkable runners.
Most formal: Though flightless, ostriches are remarkable runners.

Question:
Which sales pitch is more formal?

0. Find crazy good gifts every time.
1. Find the perfect gift for every occasion.

[Assistant]
The first sales pitch is more formal. It uses more elevated language (perfect gift for every occasion). The other sales pitch uses slang (crazy good).
Therefore my final answer is: 1