ellendagher/MNLP_M2_mcqa_dataset_lighteval_cleaned

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What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years?	[ "microevolutions", "mass migrations", "spontaneous mutations", "mass extinctions" ]	mass extinctions	Answer the following multiple-choice question. Question: What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years? Options: A. microevolutions B. mass migrations C. spontaneous mutations D. mass extinctions Which option is correct and why?	The correct answer is: mass extinctions.	D
androgens and what kind of messengers?	[ "animals", "interact", "organ", "humans", "chemical", "PDAs", "allow growth", "kinetic" ]	chemical	Answer the following multiple-choice question. Question: androgens and what kind of messengers? Options: A. animals B. interact C. organ D. humans E. chemical F. PDAs G. allow growth H. kinetic Which option is correct and why?	The correct answer is: chemical.	E
An area of land has more rainfall, producing more plants of various species. The plant boom causes	[ "a hydrogen explosion", "a boosted ecosystem", "a crying child", "an extreme drought" ]	a boosted ecosystem	Answer the following multiple-choice question. Question: An area of land has more rainfall, producing more plants of various species. The plant boom causes Options: A. a hydrogen explosion B. a boosted ecosystem C. a crying child D. an extreme drought Which option is correct and why?	The correct answer is: a boosted ecosystem.	B
What plays a variety of important roles in biochemical systems?	[ "bacteria", "mutation", "reactants", "protein" ]	protein	Answer the following multiple-choice question. Question: What plays a variety of important roles in biochemical systems? Options: A. bacteria B. mutation C. reactants D. protein Which option is correct and why?	The correct answer is: protein.	D
When fossil fuel is burned the chemical energy is converted into what?	[ "thermal energy", "natural energy", "atmospheric energy", "kinetic energy" ]	thermal energy	Answer the following multiple-choice question. Question: When fossil fuel is burned the chemical energy is converted into what? Options: A. thermal energy B. natural energy C. atmospheric energy D. kinetic energy Which option is correct and why?	The correct answer is: thermal energy.	A
What promotes cell division and are necessary for growing plants in tissue culture?	[ "auxins", "mitochondria", "polyamines", "cytokinins" ]	cytokinins	Answer the following multiple-choice question. Question: What promotes cell division and are necessary for growing plants in tissue culture? Options: A. auxins B. mitochondria C. polyamines D. cytokinins Which option is correct and why?	The correct answer is: cytokinins.	D
What term is used to describe how fast a chemical reaction occurs?	[ "catalysis", "velocity", "response time", "reaction rate" ]	reaction rate	Answer the following multiple-choice question. Question: What term is used to describe how fast a chemical reaction occurs? Options: A. catalysis B. velocity C. response time D. reaction rate Which option is correct and why?	The correct answer is: reaction rate.	D
What is the opposite of rarefaction zones, where air molecules in waves are loosely packed?	[ "molecules zones", "pressure wave", "compression zones", "measurements zones" ]	compression zones	Answer the following multiple-choice question. Question: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed? Options: A. molecules zones B. pressure wave C. compression zones D. measurements zones Which option is correct and why?	The correct answer is: compression zones.	C
what is electricity sometimes used to heat?	[ "space", "hospitals", "waves", "direct energy", "energy", "Light", "condensation", "clouds" ]	hospitals	Answer the following multiple-choice question. Question: what is electricity sometimes used to heat? Options: A. space B. hospitals C. waves D. direct energy E. energy F. Light G. condensation H. clouds Which option is correct and why?	The correct answer is: hospitals.	B
Which part of the body shows does horner's syndrome affect?	[ "the mouth", "the tongue", "one eye", "the nose" ]	one eye	Answer the following multiple-choice question. Question: Which part of the body shows does horner's syndrome affect? Options: A. the mouth B. the tongue C. one eye D. the nose Which option is correct and why?	The correct answer is: one eye.	C
What does extreme heat and pressure in a swamp over long periods of time create?	[ "harm", "soils", "death", "cracks", "sweat", "loss", "Injury", "bogs" ]	bogs	Answer the following multiple-choice question. Question: What does extreme heat and pressure in a swamp over long periods of time create? Options: A. harm B. soils C. death D. cracks E. sweat F. loss G. Injury H. bogs Which option is correct and why?	The correct answer is: bogs.	A
What do earthworms do when a segment breaks off	[ "Dies", "Regrows it", "Reproduces", "Sediment", "root growth", "migrate", "Stops growing", "roots" ]	Regrows it	Answer the following multiple-choice question. Question: What do earthworms do when a segment breaks off Options: A. Dies B. Regrows it C. Reproduces D. Sediment E. root growth F. migrate G. Stops growing H. roots Which option is correct and why?	The correct answer is: Regrows it.	B
The number of moles of solute in 1 kg of solvent is defined as what?	[ "pollenation", "singularity", "molarity", "kilocalorie" ]	molarity	Answer the following multiple-choice question. Question: The number of moles of solute in 1 kg of solvent is defined as what? Options: A. pollenation B. singularity C. molarity D. kilocalorie Which option is correct and why?	The correct answer is: molarity.	C
The celestial object closest to Earth is	[ "Mercury and Venus are equally closest", "the object the Earth orbits", "the third planet from the Sun", "the large object that illuminates a night sky" ]	the large object that illuminates a night sky	Answer the following multiple-choice question. Question: The celestial object closest to Earth is Options: A. Mercury and Venus are equally closest B. the object the Earth orbits C. the third planet from the Sun D. the large object that illuminates a night sky Which option is correct and why?	The correct answer is: the large object that illuminates a night sky.	D
A person buys a cheap hammer and it breaks a month later. The person invests in an expensive hammer and	[ "it endures", "died", "baked it", "ate it" ]	it endures	Answer the following multiple-choice question. Question: A person buys a cheap hammer and it breaks a month later. The person invests in an expensive hammer and Options: A. it endures B. died C. baked it D. ate it Which option is correct and why?	The correct answer is: it endures.	A
Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms?	[ "one", "two", "three", "four" ]	two	Answer the following multiple-choice question. Question: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Options: A. one B. two C. three D. four Which option is correct and why?	The correct answer is: two.	B
Microevolution occurs in a population when what frequencies change over time?	[ "molecule", "eukaryote", "allele", "antenna" ]	allele	Answer the following multiple-choice question. Question: Microevolution occurs in a population when what frequencies change over time? Options: A. molecule B. eukaryote C. allele D. antenna Which option is correct and why?	The correct answer is: allele.	C
What remains a constant of radioactive substance over time?	[ "volatility", "acidity", "temperature", "rate of decay" ]	rate of decay	Answer the following multiple-choice question. Question: What remains a constant of radioactive substance over time? Options: A. volatility B. acidity C. temperature D. rate of decay Which option is correct and why?	The correct answer is: rate of decay.	D
When cell walls relax they	[ "migrate", "slows", "nektar", "vibrate", "sweat", "widen", "expand", "heat" ]	widen	Answer the following multiple-choice question. Question: When cell walls relax they Options: A. migrate B. slows C. nektar D. vibrate E. sweat F. widen G. expand H. heat Which option is correct and why?	The correct answer is: widen.	A
A seasonal change may be expressed in	[ "birds flapping their wings", "birds leaving a state", "cows chewing their cud", "horses being saddled up" ]	birds leaving a state	Answer the following multiple-choice question. Question: A seasonal change may be expressed in Options: A. birds flapping their wings B. birds leaving a state C. cows chewing their cud D. horses being saddled up Which option is correct and why?	The correct answer is: birds leaving a state.	B
What is when rocks are broken down?	[ "roof weathering", "Plant growth is reduced", "brick weathering", "Physical weathering", "remains of prehistoric life", "at or near the margins", "home weathering", "major threat to health" ]	Physical weathering	Answer the following multiple-choice question. Question: What is when rocks are broken down? Options: A. roof weathering B. Plant growth is reduced C. brick weathering D. Physical weathering E. remains of prehistoric life F. at or near the margins G. home weathering H. major threat to health Which option is correct and why?	The correct answer is: Physical weathering.	D
Some protists absorb nutrients from decaying matter like a what?	[ "insects", "fungus", "mite", "plant" ]	fungus	Answer the following multiple-choice question. Question: Some protists absorb nutrients from decaying matter like a what? Options: A. insects B. fungus C. mite D. plant Which option is correct and why?	The correct answer is: fungus.	B
What in the Earth's crust causes earthquakes?	[ "heat", "stress", "cracks", "volcanoes", "erosion", "waves", "Wind", "Movement" ]	stress	Answer the following multiple-choice question. Question: What in the Earth's crust causes earthquakes? Options: A. heat B. stress C. cracks D. volcanoes E. erosion F. waves G. Wind H. Movement Which option is correct and why?	The correct answer is: stress.	B
If most reptiles have bad eyesight, the ability to smell is what?	[ "dangerous", "lowered", "improve", "positive", "smelled", "decreased", "heightened", "critical organs" ]	heightened	Answer the following multiple-choice question. Question: If most reptiles have bad eyesight, the ability to smell is what? Options: A. dangerous B. lowered C. improve D. positive E. smelled F. decreased G. heightened H. critical organs Which option is correct and why?	The correct answer is: heightened.	A
What type of fibers are made mostly of protein in living things?	[ "liver fibers", "muscle fibers", "organ fibers", "connective tissue fibers" ]	muscle fibers	Answer the following multiple-choice question. Question: What type of fibers are made mostly of protein in living things? Options: A. liver fibers B. muscle fibers C. organ fibers D. connective tissue fibers Which option is correct and why?	The correct answer is: muscle fibers.	B
What are the "code words" of the genetic code?	[ "nucleotides", "lipids", "codons", "polymers" ]	codons	Answer the following multiple-choice question. Question: What are the "code words" of the genetic code? Options: A. nucleotides B. lipids C. codons D. polymers Which option is correct and why?	The correct answer is: codons.	C
a scuba diver startles an octopus, and suddenly the water changed color, what happened?	[ "it died and released a color", "it was amused by the diver", "it was trying to hide from the diver", "it was thanking the diver" ]	it was trying to hide from the diver	Answer the following multiple-choice question. Question: a scuba diver startles an octopus, and suddenly the water changed color, what happened? Options: A. it died and released a color B. it was amused by the diver C. it was trying to hide from the diver D. it was thanking the diver Which option is correct and why?	The correct answer is: it was trying to hide from the diver.	C
what do plants lose to the atmosphere?	[ "oxygen", "gas", "rain", "sugar", "heat", "water", "energy", "Energy." ]	water	Answer the following multiple-choice question. Question: what do plants lose to the atmosphere? Options: A. oxygen B. gas C. rain D. sugar E. heat F. water G. energy H. Energy. Which option is correct and why?	The correct answer is: water.	A
Sandbars are a part of most seas because there are	[ "waves which adjust silt", "lots of stones in seas", "places where fish eat", "sand that needs to be piled" ]	waves which adjust silt	Answer the following multiple-choice question. Question: Sandbars are a part of most seas because there are Options: A. waves which adjust silt B. lots of stones in seas C. places where fish eat D. sand that needs to be piled Which option is correct and why?	The correct answer is: waves which adjust silt.	A
what does meiosis produce?	[ "ova and spermatozoa", "rapid expansion", "Plant reproduction", "Most plants", "h2o", "less cells", "checks and balances", "members of their own species" ]	ova and spermatozoa	Answer the following multiple-choice question. Question: what does meiosis produce? Options: A. ova and spermatozoa B. rapid expansion C. Plant reproduction D. Most plants E. h2o F. less cells G. checks and balances H. members of their own species Which option is correct and why?	The correct answer is: ova and spermatozoa.	A
What causes a gas to condense?	[ "Energy.", "kinetic energy", "Water expanding", "It gets heated up", "It expands", "circulatory system", "reduced heat", "less water" ]	reduced heat	Answer the following multiple-choice question. Question: What causes a gas to condense? Options: A. Energy. B. kinetic energy C. Water expanding D. It gets heated up E. It expands F. circulatory system G. reduced heat H. less water Which option is correct and why?	The correct answer is: reduced heat.	A
A way to conserve something is to	[ "use it up", "use it sparsely", "use it quickly", "finish it off" ]	use it sparsely	Answer the following multiple-choice question. Question: A way to conserve something is to Options: A. use it up B. use it sparsely C. use it quickly D. finish it off Which option is correct and why?	The correct answer is: use it sparsely.	B
Which two objects are likely to be magnetic?	[ "a cell phone and a coffee mug", "a credit card and the register", "a cat and a dog", "a tree and a power line" ]	a credit card and the register	Answer the following multiple-choice question. Question: Which two objects are likely to be magnetic? Options: A. a cell phone and a coffee mug B. a credit card and the register C. a cat and a dog D. a tree and a power line Which option is correct and why?	The correct answer is: a credit card and the register.	B
Chicken and potatoes can be cooked in a pan on what?	[ "a paper towel", "on another chicken", "a stove", "in the freezer", "less water", "heat", "plates", "loose soil" ]	a stove	Answer the following multiple-choice question. Question: Chicken and potatoes can be cooked in a pan on what? Options: A. a paper towel B. on another chicken C. a stove D. in the freezer E. less water F. heat G. plates H. loose soil Which option is correct and why?	The correct answer is: a stove.	C
A decrease in trees may be attributed to	[ "dendrophilia", "hiking enthusiasts", "increased chainsaw sales", "nature photographers" ]	increased chainsaw sales	Answer the following multiple-choice question. Question: A decrease in trees may be attributed to Options: A. dendrophilia B. hiking enthusiasts C. increased chainsaw sales D. nature photographers Which option is correct and why?	The correct answer is: increased chainsaw sales.	C
What natural disaster is california most linked with?	[ "earthquakes", "hurricanes", "fires", "volcanoes" ]	earthquakes	Answer the following multiple-choice question. Question: What natural disaster is california most linked with? Options: A. earthquakes B. hurricanes C. fires D. volcanoes Which option is correct and why?	The correct answer is: earthquakes.	A
The decline of speed is associated with what?	[ "an object gaining energy", "a lot of human deaths", "decrease stamina", "hyperthyroidism", "an object losing energy", "an object gaining momentum", "body temperature reduces", "an object going faster" ]	an object losing energy	Answer the following multiple-choice question. Question: The decline of speed is associated with what? Options: A. an object gaining energy B. a lot of human deaths C. decrease stamina D. hyperthyroidism E. an object losing energy F. an object gaining momentum G. body temperature reduces H. an object going faster Which option is correct and why?	The correct answer is: an object losing energy.	E
Lisa was hiking in a rocky area and in a rock, she saw what looked like footprints made by a bird. But weirdly, they were in a rock. Where did they come from?	[ "The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock", "The rock was actually an asteroid", "a very heavy bird made imprints in the rock.", "a spaceship used a laser to make the etches in the rock" ]	The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock	Answer the following multiple-choice question. Question: Lisa was hiking in a rocky area and in a rock, she saw what looked like footprints made by a bird. But weirdly, they were in a rock. Where did they come from? Options: A. The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock B. The rock was actually an asteroid C. a very heavy bird made imprints in the rock. D. a spaceship used a laser to make the etches in the rock Which option is correct and why?	The correct answer is: The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock.	A
What may be stored in sedimentary rock for millions of years.	[ "Sand castles", "Chemical energy", "heat energy", "Millions of dollars.", "A fuel source.", "Energy.", "In sediment", "Stored animal fur." ]	A fuel source.	Answer the following multiple-choice question. Question: What may be stored in sedimentary rock for millions of years. Options: A. Sand castles B. Chemical energy C. heat energy D. Millions of dollars. E. A fuel source. F. Energy. G. In sediment H. Stored animal fur. Which option is correct and why?	The correct answer is: A fuel source..	E
What organelles that are found in the cells of mosses.	[ "chloroplasts", "epidermal", "sensory neurons", "an organism's body", "more abundant", "Epidermis", "produce light", "it needs them" ]	chloroplasts	Answer the following multiple-choice question. Question: What organelles that are found in the cells of mosses. Options: A. chloroplasts B. epidermal C. sensory neurons D. an organism's body E. more abundant F. Epidermis G. produce light H. it needs them Which option is correct and why?	The correct answer is: chloroplasts.	A
Plants require	[ "oxygen", "H2O", "Fe", "clouds" ]	H2O	Answer the following multiple-choice question. Question: Plants require Options: A. oxygen B. H2O C. Fe D. clouds Which option is correct and why?	The correct answer is: H2O.	B
A flower's colors come from what part of the plant?	[ "vacuole", "Internode", "Petiole", "glycogen" ]	vacuole	Answer the following multiple-choice question. Question: A flower's colors come from what part of the plant? Options: A. vacuole B. Internode C. Petiole D. glycogen Which option is correct and why?	The correct answer is: vacuole.	A
Flowers attract	[ "bees", "parasites", "electrons", "insects", "pollen", "plant life", "carbon", "honeybees" ]	insects	Answer the following multiple-choice question. Question: Flowers attract Options: A. bees B. parasites C. electrons D. insects E. pollen F. plant life G. carbon H. honeybees Which option is correct and why?	The correct answer is: insects.	D
A girl with a burn scar on her arm was most likely	[ "in a swimming pool", "in a safe space", "near a running kiln", "protected from any injury" ]	near a running kiln	Answer the following multiple-choice question. Question: A girl with a burn scar on her arm was most likely Options: A. in a swimming pool B. in a safe space C. near a running kiln D. protected from any injury Which option is correct and why?	The correct answer is: near a running kiln.	C
Mammals are synapsids, meaning they have a single opening in what structure?	[ "spine", "hip", "heart", "skull" ]	skull	Answer the following multiple-choice question. Question: Mammals are synapsids, meaning they have a single opening in what structure? Options: A. spine B. hip C. heart D. skull Which option is correct and why?	The correct answer is: skull.	D
What do the cells in the front of a volvox typically develop to help swim towards light?	[ "sunspots", "tumors", "eyespots", "vertebrates" ]	eyespots	Answer the following multiple-choice question. Question: What do the cells in the front of a volvox typically develop to help swim towards light? Options: A. sunspots B. tumors C. eyespots D. vertebrates Which option is correct and why?	The correct answer is: eyespots.	C
What are small organelles and are the site of protein synthesis called.	[ "chloroplasts", "chromosomes", "ribosomes", "chromosomes" ]	ribosomes	Answer the following multiple-choice question. Question: What are small organelles and are the site of protein synthesis called. Options: A. chloroplasts B. chromosomes C. ribosomes D. chromosomes Which option is correct and why?	The correct answer is: ribosomes.	C
What is more complex in eukaryotes than prokaryotes?	[ "migraines", "pollen", "cancer", "orchids", "genes", "a cuticle", "A computer", "mitosis" ]	mitosis	Answer the following multiple-choice question. Question: What is more complex in eukaryotes than prokaryotes? Options: A. migraines B. pollen C. cancer D. orchids E. genes F. a cuticle G. A computer H. mitosis Which option is correct and why?	The correct answer is: mitosis.	A
If a creature is building a soft space for sitting and roosting, it is likely	[ "a chickadee", "a rabbit", "a ferret", "a dog" ]	a chickadee	Answer the following multiple-choice question. Question: If a creature is building a soft space for sitting and roosting, it is likely Options: A. a chickadee B. a rabbit C. a ferret D. a dog Which option is correct and why?	The correct answer is: a chickadee.	A
How do we track canyon changes?	[ "LEDs", "wind", "forces", "river", "slow", "Pins", "Raft", "three" ]	Pins	Answer the following multiple-choice question. Question: How do we track canyon changes? Options: A. LEDs B. wind C. forces D. river E. slow F. Pins G. Raft H. three Which option is correct and why?	The correct answer is: Pins.	A
What happens to the shape of the card when you bend it into three sections?	[ "mechanical", "squeeze", "heat", "Changes", "rips", "It expands", "modify", "mutates" ]	Changes	Answer the following multiple-choice question. Question: What happens to the shape of the card when you bend it into three sections? Options: A. mechanical B. squeeze C. heat D. Changes E. rips F. It expands G. modify H. mutates Which option is correct and why?	The correct answer is: Changes.	D
What are the properties of solutions called that depend only on the concentration of dissolved particles and not on their identity?	[ "platyhelminth properties", "platyhelminth properties", "colligative properties", "platyhelminth properties" ]	colligative properties	Answer the following multiple-choice question. Question: What are the properties of solutions called that depend only on the concentration of dissolved particles and not on their identity? Options: A. platyhelminth properties B. platyhelminth properties C. colligative properties D. platyhelminth properties Which option is correct and why?	The correct answer is: colligative properties.	C
What are floods a source of on a floodplain?	[ "nutrients", "salt", "acids", "minerals" ]	nutrients	Answer the following multiple-choice question. Question: What are floods a source of on a floodplain? Options: A. nutrients B. salt C. acids D. minerals Which option is correct and why?	The correct answer is: nutrients.	A
Producers at the base of ecological food webs are also known as?	[ "autotrophic", "endoscopic", "mutualistic", "symbiotic" ]	autotrophic	Answer the following multiple-choice question. Question: Producers at the base of ecological food webs are also known as? Options: A. autotrophic B. endoscopic C. mutualistic D. symbiotic Which option is correct and why?	The correct answer is: autotrophic.	A
What reaction is considered the reverse of photosynthesis?	[ "cellular decay", "cellular transfer", "cellular digestion", "cellular respiration" ]	cellular respiration	Answer the following multiple-choice question. Question: What reaction is considered the reverse of photosynthesis? Options: A. cellular decay B. cellular transfer C. cellular digestion D. cellular respiration Which option is correct and why?	The correct answer is: cellular respiration.	D
What is essential to all living organisms?	[ "garbage", "Energy.", "hydration", "gifts", "food and shelter", "Chemical energy", "poison", "The atmosphere" ]	The atmosphere	Answer the following multiple-choice question. Question: What is essential to all living organisms? Options: A. garbage B. Energy. C. hydration D. gifts E. food and shelter F. Chemical energy G. poison H. The atmosphere Which option is correct and why?	The correct answer is: The atmosphere.	A
What do ocean mollusks use to absorb oxygen from the water?	[ "shells", "gills", "pores", "scales" ]	gills	Answer the following multiple-choice question. Question: What do ocean mollusks use to absorb oxygen from the water? Options: A. shells B. gills C. pores D. scales Which option is correct and why?	The correct answer is: gills.	B
What might have a negative impact on a child	[ "buying them things", "hitting them", "loving them", "hugging them" ]	hitting them	Answer the following multiple-choice question. Question: What might have a negative impact on a child Options: A. buying them things B. hitting them C. loving them D. hugging them Which option is correct and why?	The correct answer is: hitting them.	B
What term is used to describe animals that excrete ammonia?	[ "xerophyte", "spirogyra", "ammonotelic", "ammonstand" ]	ammonotelic	Answer the following multiple-choice question. Question: What term is used to describe animals that excrete ammonia? Options: A. xerophyte B. spirogyra C. ammonotelic D. ammonstand Which option is correct and why?	The correct answer is: ammonotelic.	C
when organisms die, they	[ "reproduce", "wither away", "petrify", "regenerate" ]	wither away	Answer the following multiple-choice question. Question: when organisms die, they Options: A. reproduce B. wither away C. petrify D. regenerate Which option is correct and why?	The correct answer is: wither away.	B
A star produces light energy and heat because it has a variety of	[ "moon rotation causing friction", "light energy flowing to earth", "reactions of nuclear form", "global warming caused by co2" ]	reactions of nuclear form	Answer the following multiple-choice question. Question: A star produces light energy and heat because it has a variety of Options: A. moon rotation causing friction B. light energy flowing to earth C. reactions of nuclear form D. global warming caused by co2 Which option is correct and why?	The correct answer is: reactions of nuclear form.	C
The distance between two crests of a wave of light is referred to as what, which is related to the color of light?	[ "bandwidth", "spectrum", "magnitude", "wavelength" ]	wavelength	Answer the following multiple-choice question. Question: The distance between two crests of a wave of light is referred to as what, which is related to the color of light? Options: A. bandwidth B. spectrum C. magnitude D. wavelength Which option is correct and why?	The correct answer is: wavelength.	D
What type of trunk does evergreen usually have?	[ "oak", "greenwood", "woody", "bark", "hollowed", "Spruce", "spiny", "bent" ]	woody	Answer the following multiple-choice question. Question: What type of trunk does evergreen usually have? Options: A. oak B. greenwood C. woody D. bark E. hollowed F. Spruce G. spiny H. bent Which option is correct and why?	The correct answer is: woody.	C
How do platypus lay eggs?	[ "epidermis and dermis", "on a flat plane", "in a tree", "fur and fat", "during the day", "it keeps an organism warm", "in a dug out area", "in the water" ]	in a dug out area	Answer the following multiple-choice question. Question: How do platypus lay eggs? Options: A. epidermis and dermis B. on a flat plane C. in a tree D. fur and fat E. during the day F. it keeps an organism warm G. in a dug out area H. in the water Which option is correct and why?	The correct answer is: in a dug out area.	A
what can make proteins?	[ "animal transport", "volume", "prokaryotes", "heating liquids", "Cooking", "h2o", "density", "animals" ]	prokaryotes	Answer the following multiple-choice question. Question: what can make proteins? Options: A. animal transport B. volume C. prokaryotes D. heating liquids E. Cooking F. h2o G. density H. animals Which option is correct and why?	The correct answer is: prokaryotes.	C
An example of a simple machine requiring mechanical energy in order to function would be	[ "a light that needs a crank to be turned", "a radio that needs four batteries", "a computer that needs to be plugged in", "a stove that works on gas" ]	a light that needs a crank to be turned	Answer the following multiple-choice question. Question: An example of a simple machine requiring mechanical energy in order to function would be Options: A. a light that needs a crank to be turned B. a radio that needs four batteries C. a computer that needs to be plugged in D. a stove that works on gas Which option is correct and why?	The correct answer is: a light that needs a crank to be turned.	A
Earthworms are terrific for plants and are important what?	[ "deposit feeders", "more abundant", "grounders", "agriculture", "Quality of life", "the environment", "dirt grubbers", "bird enemies" ]	deposit feeders	Answer the following multiple-choice question. Question: Earthworms are terrific for plants and are important what? Options: A. deposit feeders B. more abundant C. grounders D. agriculture E. Quality of life F. the environment G. dirt grubbers H. bird enemies Which option is correct and why?	The correct answer is: deposit feeders.	A
ats and proteins can be used for energy by the cells of what?	[ "mammals", "Plants growth", "Most plants", "our planet", "microorganisms", "bacteria", "most organisms", "animals" ]	most organisms	Answer the following multiple-choice question. Question: ats and proteins can be used for energy by the cells of what? Options: A. mammals B. Plants growth C. Most plants D. our planet E. microorganisms F. bacteria G. most organisms H. animals Which option is correct and why?	The correct answer is: most organisms.	A
While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what?	[ "datum", "egg", "ovum", "semen" ]	ovum	Answer the following multiple-choice question. Question: While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what? Options: A. datum B. egg C. ovum D. semen Which option is correct and why?	The correct answer is: ovum.	C
what is a prism used to refract?	[ "Something that can be auburn", "basic building blocks of life", "mirrors", "our nearest star", "wavelengths and photons", "microwaves", "triangles", "focusing a lens" ]	wavelengths and photons	Answer the following multiple-choice question. Question: what is a prism used to refract? Options: A. Something that can be auburn B. basic building blocks of life C. mirrors D. our nearest star E. wavelengths and photons F. microwaves G. triangles H. focusing a lens Which option is correct and why?	The correct answer is: wavelengths and photons.	E
What is formed from extreme heat and pressure?	[ "glass", "marble", "crust", "soils", "coal", "sugar", "calcite", "arteries" ]	marble	Answer the following multiple-choice question. Question: What is formed from extreme heat and pressure? Options: A. glass B. marble C. crust D. soils E. coal F. sugar G. calcite H. arteries Which option is correct and why?	The correct answer is: marble.	B
What occurs when muscle fibers get longer?	[ "photosynthesis", "rapid expansion", "kinetic energy", "cramps", "relaxation", "fertilization", "movement", "sweating" ]	relaxation	Answer the following multiple-choice question. Question: What occurs when muscle fibers get longer? Options: A. photosynthesis B. rapid expansion C. kinetic energy D. cramps E. relaxation F. fertilization G. movement H. sweating Which option is correct and why?	The correct answer is: relaxation.	E
Catalysts require proper what to work?	[ "DNA", "pH", "pan", "RNA", "elevation", "time of day", "gas", "humidity" ]	pH	Answer the following multiple-choice question. Question: Catalysts require proper what to work? Options: A. DNA B. pH C. pan D. RNA E. elevation F. time of day G. gas H. humidity Which option is correct and why?	The correct answer is: pH.	B
Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these?	[ "phases of mass", "phases of matter", "forms of substances", "types of atoms" ]	phases of matter	Answer the following multiple-choice question. Question: Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these? Options: A. phases of mass B. phases of matter C. forms of substances D. types of atoms Which option is correct and why?	The correct answer is: phases of matter.	B
Vertebrates lacking what structures often use lungs for gas exchange?	[ "spores", "pores", "nostrils", "gills" ]	gills	Answer the following multiple-choice question. Question: Vertebrates lacking what structures often use lungs for gas exchange? Options: A. spores B. pores C. nostrils D. gills Which option is correct and why?	The correct answer is: gills.	D
What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called?	[ "radioactive decay", "nuclear decay", "initial decay", "radioactive decrease" ]	radioactive decay	Answer the following multiple-choice question. Question: What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called? Options: A. radioactive decay B. nuclear decay C. initial decay D. radioactive decrease Which option is correct and why?	The correct answer is: radioactive decay.	A
What are the preserved remains of animals, plants, and other organisms called?	[ "basalt", "rocks", "skulls", "fossils" ]	fossils	Answer the following multiple-choice question. Question: What are the preserved remains of animals, plants, and other organisms called? Options: A. basalt B. rocks C. skulls D. fossils Which option is correct and why?	The correct answer is: fossils.	D
Jackrabbits' hind legs are	[ "weak", "stubby", "elongated", "short" ]	elongated	Answer the following multiple-choice question. Question: Jackrabbits' hind legs are Options: A. weak B. stubby C. elongated D. short Which option is correct and why?	The correct answer is: elongated.	C
What do astronauts require for long flights?	[ "problems", "nutrients", "glycogen", "danger", "energy", "sugar", "hydration", "trouble" ]	energy	Answer the following multiple-choice question. Question: What do astronauts require for long flights? Options: A. problems B. nutrients C. glycogen D. danger E. energy F. sugar G. hydration H. trouble Which option is correct and why?	The correct answer is: energy.	E
What is the term for the process in which an area that has never before been colonized changes through time?	[ "ecological succession", "environmental succession", "continuous succession", "colony succession" ]	ecological succession	Answer the following multiple-choice question. Question: What is the term for the process in which an area that has never before been colonized changes through time? Options: A. ecological succession B. environmental succession C. continuous succession D. colony succession Which option is correct and why?	The correct answer is: ecological succession.	A
What is the first part of the large intestine, where wastes enter from the small intestine?	[ "the cecum", "stomach", "bowel", "esophagus" ]	the cecum	Answer the following multiple-choice question. Question: What is the first part of the large intestine, where wastes enter from the small intestine? Options: A. the cecum B. stomach C. bowel D. esophagus Which option is correct and why?	The correct answer is: the cecum.	A
An example of an animal that has permeable skin is	[ "a fish", "goats", "a fox", "mammals", "an iguana", "rabbit", "a frog", "a shark" ]	a frog	Answer the following multiple-choice question. Question: An example of an animal that has permeable skin is Options: A. a fish B. goats C. a fox D. mammals E. an iguana F. rabbit G. a frog H. a shark Which option is correct and why?	The correct answer is: a frog.	A
Nuclear changes occur with a simultaneous release of what, and a slight drop in mass?	[ "hydrogen", "mineral", "energy", "oil" ]	energy	Answer the following multiple-choice question. Question: Nuclear changes occur with a simultaneous release of what, and a slight drop in mass? Options: A. hydrogen B. mineral C. energy D. oil Which option is correct and why?	The correct answer is: energy.	C
What requires energy for survival?	[ "squids", "Bats", "humans", "sunlight", "water", "animals", "rocks", "trees" ]	trees	Answer the following multiple-choice question. Question: What requires energy for survival? Options: A. squids B. Bats C. humans D. sunlight E. water F. animals G. rocks H. trees Which option is correct and why?	The correct answer is: trees.	A
Vertebrates also require relatively large quantities of calcium and phosphorus for building and maintaining what?	[ "blood", "metabolism", "brain cells", "bone" ]	bone	Answer the following multiple-choice question. Question: Vertebrates also require relatively large quantities of calcium and phosphorus for building and maintaining what? Options: A. blood B. metabolism C. brain cells D. bone Which option is correct and why?	The correct answer is: bone.	D
What device is a magnetic disc that provides long-term storage for programs and data?	[ "cassette", "hard drive", "software", "floppy drive" ]	hard drive	Answer the following multiple-choice question. Question: What device is a magnetic disc that provides long-term storage for programs and data? Options: A. cassette B. hard drive C. software D. floppy drive Which option is correct and why?	The correct answer is: hard drive.	B
Many discrete characters are determined by a single gene locus with different alleles that produce distinct what?	[ "phenotypes", "phototypes", "clusters", "subtypes" ]	phenotypes	Answer the following multiple-choice question. Question: Many discrete characters are determined by a single gene locus with different alleles that produce distinct what? Options: A. phenotypes B. phototypes C. clusters D. subtypes Which option is correct and why?	The correct answer is: phenotypes.	A
what is a mirror used for reflecting?	[ "density", "Large.", "gravity", "fibers", "LEDs", "eyes", "Glass", "air" ]	LEDs	Answer the following multiple-choice question. Question: what is a mirror used for reflecting? Options: A. density B. Large. C. gravity D. fibers E. LEDs F. eyes G. Glass H. air Which option is correct and why?	The correct answer is: LEDs.	E
What is the only way to completely avoid stis?	[ "contraceptive use", "cover your mouth", "avoid sexual contact", "oral sex" ]	avoid sexual contact	Answer the following multiple-choice question. Question: What is the only way to completely avoid stis? Options: A. contraceptive use B. cover your mouth C. avoid sexual contact D. oral sex Which option is correct and why?	The correct answer is: avoid sexual contact.	C
Mutations that lead to cancer usually effect genes that aid in what?	[ "illness", "health", "disease", "blood transfer", "chemotherapy", "respiraration", "mitosis", "recovery" ]	mitosis	Answer the following multiple-choice question. Question: Mutations that lead to cancer usually effect genes that aid in what? Options: A. illness B. health C. disease D. blood transfer E. chemotherapy F. respiraration G. mitosis H. recovery Which option is correct and why?	The correct answer is: mitosis.	A
Concentric circles that spread out through the water around the droplets are actually types of what moving through the water?	[ "winds", "lines", "waves", "troughs" ]	waves	Answer the following multiple-choice question. Question: Concentric circles that spread out through the water around the droplets are actually types of what moving through the water? Options: A. winds B. lines C. waves D. troughs Which option is correct and why?	The correct answer is: waves.	C
What are two ways cnidarians are able to reproduce?	[ "asexually and sexually", "internally and externally", "spawning and sexual", "mitosis and meiosis" ]	asexually and sexually	Answer the following multiple-choice question. Question: What are two ways cnidarians are able to reproduce? Options: A. asexually and sexually B. internally and externally C. spawning and sexual D. mitosis and meiosis Which option is correct and why?	The correct answer is: asexually and sexually.	A
How much space a surface covers is known as what?	[ "area", "Flatness", "Lenght", "Height" ]	area	Answer the following multiple-choice question. Question: How much space a surface covers is known as what? Options: A. area B. Flatness C. Lenght D. Height Which option is correct and why?	The correct answer is: area.	A
what do animals use for energy?	[ "hydrogen", "chemicals", "vitamin C", "nitrogen", "food", "glucose", "Nutrients", "soil" ]	glucose	Answer the following multiple-choice question. Question: what do animals use for energy? Options: A. hydrogen B. chemicals C. vitamin C D. nitrogen E. food F. glucose G. Nutrients H. soil Which option is correct and why?	The correct answer is: glucose.	A
A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called what?	[ "clamon", "endosperm", "thallus", "coelom" ]	coelom	Answer the following multiple-choice question. Question: A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called what? Options: A. clamon B. endosperm C. thallus D. coelom Which option is correct and why?	The correct answer is: coelom.	D
What happens when antibodies are transferred to a person who has never been exposed to the pathogen?	[ "acquired immunity", "passive immunity", "active disease", "allergic reaction" ]	passive immunity	Answer the following multiple-choice question. Question: What happens when antibodies are transferred to a person who has never been exposed to the pathogen? Options: A. acquired immunity B. passive immunity C. active disease D. allergic reaction Which option is correct and why?	The correct answer is: passive immunity.	B
Conservation of what property of ecosystems is the aim of measures like the endangered species act?	[ "bioremediation", "biodiversity", "Allopatric speciation", "natural selection" ]	biodiversity	Answer the following multiple-choice question. Question: Conservation of what property of ecosystems is the aim of measures like the endangered species act? Options: A. bioremediation B. biodiversity C. Allopatric speciation D. natural selection Which option is correct and why?	The correct answer is: biodiversity.	B
To warm yourself up on a chilly day	[ "rub your palms together", "wear short sleeve shirts", "go without any socks", "stand still in one place" ]	rub your palms together	Answer the following multiple-choice question. Question: To warm yourself up on a chilly day Options: A. rub your palms together B. wear short sleeve shirts C. go without any socks D. stand still in one place Which option is correct and why?	The correct answer is: rub your palms together.	A
A blackberry bush needing to photosynthesize would have difficulty	[ "under the sun", "at night", "in summer weather", "in daylight" ]	at night	Answer the following multiple-choice question. Question: A blackberry bush needing to photosynthesize would have difficulty Options: A. under the sun B. at night C. in summer weather D. in daylight Which option is correct and why?	The correct answer is: at night.	B
What layered form of carbon is used as a lubricant and in pencils?	[ "copper", "lead", "graphite", "carbonite" ]	graphite	Answer the following multiple-choice question. Question: What layered form of carbon is used as a lubricant and in pencils? Options: A. copper B. lead C. graphite D. carbonite Which option is correct and why?	The correct answer is: graphite.	C

What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years?

[ "microevolutions", "mass migrations", "spontaneous mutations", "mass extinctions" ]

mass extinctions

Answer the following multiple-choice question. Question: What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years? Options: A. microevolutions B. mass migrations C. spontaneous mutations D. mass extinctions Which option is correct and why?

The correct answer is: mass extinctions.

D

androgens and what kind of messengers?

[ "animals", "interact", "organ", "humans", "chemical", "PDAs", "allow growth", "kinetic" ]

chemical

Answer the following multiple-choice question. Question: androgens and what kind of messengers? Options: A. animals B. interact C. organ D. humans E. chemical F. PDAs G. allow growth H. kinetic Which option is correct and why?

The correct answer is: chemical.

E

An area of land has more rainfall, producing more plants of various species. The plant boom causes

[ "a hydrogen explosion", "a boosted ecosystem", "a crying child", "an extreme drought" ]

a boosted ecosystem

Answer the following multiple-choice question. Question: An area of land has more rainfall, producing more plants of various species. The plant boom causes Options: A. a hydrogen explosion B. a boosted ecosystem C. a crying child D. an extreme drought Which option is correct and why?

The correct answer is: a boosted ecosystem.

B

What plays a variety of important roles in biochemical systems?

[ "bacteria", "mutation", "reactants", "protein" ]

protein

Answer the following multiple-choice question. Question: What plays a variety of important roles in biochemical systems? Options: A. bacteria B. mutation C. reactants D. protein Which option is correct and why?

The correct answer is: protein.

D

When fossil fuel is burned the chemical energy is converted into what?

[ "thermal energy", "natural energy", "atmospheric energy", "kinetic energy" ]

thermal energy

Answer the following multiple-choice question. Question: When fossil fuel is burned the chemical energy is converted into what? Options: A. thermal energy B. natural energy C. atmospheric energy D. kinetic energy Which option is correct and why?

The correct answer is: thermal energy.

A

What promotes cell division and are necessary for growing plants in tissue culture?

[ "auxins", "mitochondria", "polyamines", "cytokinins" ]

cytokinins

Answer the following multiple-choice question. Question: What promotes cell division and are necessary for growing plants in tissue culture? Options: A. auxins B. mitochondria C. polyamines D. cytokinins Which option is correct and why?

The correct answer is: cytokinins.

D

What term is used to describe how fast a chemical reaction occurs?

[ "catalysis", "velocity", "response time", "reaction rate" ]

reaction rate

Answer the following multiple-choice question. Question: What term is used to describe how fast a chemical reaction occurs? Options: A. catalysis B. velocity C. response time D. reaction rate Which option is correct and why?

The correct answer is: reaction rate.

D

What is the opposite of rarefaction zones, where air molecules in waves are loosely packed?

[ "molecules zones", "pressure wave", "compression zones", "measurements zones" ]

compression zones

Answer the following multiple-choice question. Question: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed? Options: A. molecules zones B. pressure wave C. compression zones D. measurements zones Which option is correct and why?

The correct answer is: compression zones.

C

what is electricity sometimes used to heat?

[ "space", "hospitals", "waves", "direct energy", "energy", "Light", "condensation", "clouds" ]

hospitals

Answer the following multiple-choice question. Question: what is electricity sometimes used to heat? Options: A. space B. hospitals C. waves D. direct energy E. energy F. Light G. condensation H. clouds Which option is correct and why?

The correct answer is: hospitals.

B

Which part of the body shows does horner's syndrome affect?

[ "the mouth", "the tongue", "one eye", "the nose" ]

one eye

Answer the following multiple-choice question. Question: Which part of the body shows does horner's syndrome affect? Options: A. the mouth B. the tongue C. one eye D. the nose Which option is correct and why?

The correct answer is: one eye.

C

What does extreme heat and pressure in a swamp over long periods of time create?

[ "harm", "soils", "death", "cracks", "sweat", "loss", "Injury", "bogs" ]

bogs

Answer the following multiple-choice question. Question: What does extreme heat and pressure in a swamp over long periods of time create? Options: A. harm B. soils C. death D. cracks E. sweat F. loss G. Injury H. bogs Which option is correct and why?

The correct answer is: bogs.

A

What do earthworms do when a segment breaks off

[ "Dies", "Regrows it", "Reproduces", "Sediment", "root growth", "migrate", "Stops growing", "roots" ]

Regrows it

Answer the following multiple-choice question. Question: What do earthworms do when a segment breaks off Options: A. Dies B. Regrows it C. Reproduces D. Sediment E. root growth F. migrate G. Stops growing H. roots Which option is correct and why?

The correct answer is: Regrows it.

B

The number of moles of solute in 1 kg of solvent is defined as what?

[ "pollenation", "singularity", "molarity", "kilocalorie" ]

molarity

Answer the following multiple-choice question. Question: The number of moles of solute in 1 kg of solvent is defined as what? Options: A. pollenation B. singularity C. molarity D. kilocalorie Which option is correct and why?

The correct answer is: molarity.

C

The celestial object closest to Earth is

[ "Mercury and Venus are equally closest", "the object the Earth orbits", "the third planet from the Sun", "the large object that illuminates a night sky" ]

the large object that illuminates a night sky

Answer the following multiple-choice question. Question: The celestial object closest to Earth is Options: A. Mercury and Venus are equally closest B. the object the Earth orbits C. the third planet from the Sun D. the large object that illuminates a night sky Which option is correct and why?

The correct answer is: the large object that illuminates a night sky.

D

A person buys a cheap hammer and it breaks a month later. The person invests in an expensive hammer and

[ "it endures", "died", "baked it", "ate it" ]

it endures

Answer the following multiple-choice question. Question: A person buys a cheap hammer and it breaks a month later. The person invests in an expensive hammer and Options: A. it endures B. died C. baked it D. ate it Which option is correct and why?

The correct answer is: it endures.

A

Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms?

[ "one", "two", "three", "four" ]

two

Answer the following multiple-choice question. Question: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Options: A. one B. two C. three D. four Which option is correct and why?

The correct answer is: two.

B

Microevolution occurs in a population when what frequencies change over time?

[ "molecule", "eukaryote", "allele", "antenna" ]

allele

Answer the following multiple-choice question. Question: Microevolution occurs in a population when what frequencies change over time? Options: A. molecule B. eukaryote C. allele D. antenna Which option is correct and why?

The correct answer is: allele.

C

What remains a constant of radioactive substance over time?

[ "volatility", "acidity", "temperature", "rate of decay" ]

rate of decay

Answer the following multiple-choice question. Question: What remains a constant of radioactive substance over time? Options: A. volatility B. acidity C. temperature D. rate of decay Which option is correct and why?

The correct answer is: rate of decay.

D

When cell walls relax they

[ "migrate", "slows", "nektar", "vibrate", "sweat", "widen", "expand", "heat" ]

widen

Answer the following multiple-choice question. Question: When cell walls relax they Options: A. migrate B. slows C. nektar D. vibrate E. sweat F. widen G. expand H. heat Which option is correct and why?

The correct answer is: widen.

A

A seasonal change may be expressed in

[ "birds flapping their wings", "birds leaving a state", "cows chewing their cud", "horses being saddled up" ]

birds leaving a state

Answer the following multiple-choice question. Question: A seasonal change may be expressed in Options: A. birds flapping their wings B. birds leaving a state C. cows chewing their cud D. horses being saddled up Which option is correct and why?

The correct answer is: birds leaving a state.

B

What is when rocks are broken down?

[ "roof weathering", "Plant growth is reduced", "brick weathering", "Physical weathering", "remains of prehistoric life", "at or near the margins", "home weathering", "major threat to health" ]

Physical weathering

Answer the following multiple-choice question. Question: What is when rocks are broken down? Options: A. roof weathering B. Plant growth is reduced C. brick weathering D. Physical weathering E. remains of prehistoric life F. at or near the margins G. home weathering H. major threat to health Which option is correct and why?

The correct answer is: Physical weathering.

D

Some protists absorb nutrients from decaying matter like a what?

[ "insects", "fungus", "mite", "plant" ]

fungus

Answer the following multiple-choice question. Question: Some protists absorb nutrients from decaying matter like a what? Options: A. insects B. fungus C. mite D. plant Which option is correct and why?

The correct answer is: fungus.

B

What in the Earth's crust causes earthquakes?

[ "heat", "stress", "cracks", "volcanoes", "erosion", "waves", "Wind", "Movement" ]

stress

Answer the following multiple-choice question. Question: What in the Earth's crust causes earthquakes? Options: A. heat B. stress C. cracks D. volcanoes E. erosion F. waves G. Wind H. Movement Which option is correct and why?

The correct answer is: stress.

B

If most reptiles have bad eyesight, the ability to smell is what?

[ "dangerous", "lowered", "improve", "positive", "smelled", "decreased", "heightened", "critical organs" ]

heightened

Answer the following multiple-choice question. Question: If most reptiles have bad eyesight, the ability to smell is what? Options: A. dangerous B. lowered C. improve D. positive E. smelled F. decreased G. heightened H. critical organs Which option is correct and why?

The correct answer is: heightened.

A

What type of fibers are made mostly of protein in living things?

[ "liver fibers", "muscle fibers", "organ fibers", "connective tissue fibers" ]

muscle fibers

Answer the following multiple-choice question. Question: What type of fibers are made mostly of protein in living things? Options: A. liver fibers B. muscle fibers C. organ fibers D. connective tissue fibers Which option is correct and why?

The correct answer is: muscle fibers.

B

What are the "code words" of the genetic code?

[ "nucleotides", "lipids", "codons", "polymers" ]

codons

Answer the following multiple-choice question. Question: What are the "code words" of the genetic code? Options: A. nucleotides B. lipids C. codons D. polymers Which option is correct and why?

The correct answer is: codons.

C

a scuba diver startles an octopus, and suddenly the water changed color, what happened?

[ "it died and released a color", "it was amused by the diver", "it was trying to hide from the diver", "it was thanking the diver" ]

it was trying to hide from the diver

Answer the following multiple-choice question. Question: a scuba diver startles an octopus, and suddenly the water changed color, what happened? Options: A. it died and released a color B. it was amused by the diver C. it was trying to hide from the diver D. it was thanking the diver Which option is correct and why?

The correct answer is: it was trying to hide from the diver.

C

what do plants lose to the atmosphere?

[ "oxygen", "gas", "rain", "sugar", "heat", "water", "energy", "Energy." ]

water

Answer the following multiple-choice question. Question: what do plants lose to the atmosphere? Options: A. oxygen B. gas C. rain D. sugar E. heat F. water G. energy H. Energy. Which option is correct and why?

The correct answer is: water.

A

Sandbars are a part of most seas because there are

[ "waves which adjust silt", "lots of stones in seas", "places where fish eat", "sand that needs to be piled" ]

waves which adjust silt

Answer the following multiple-choice question. Question: Sandbars are a part of most seas because there are Options: A. waves which adjust silt B. lots of stones in seas C. places where fish eat D. sand that needs to be piled Which option is correct and why?

The correct answer is: waves which adjust silt.

A

what does meiosis produce?

[ "ova and spermatozoa", "rapid expansion", "Plant reproduction", "Most plants", "h2o", "less cells", "checks and balances", "members of their own species" ]

ova and spermatozoa

Answer the following multiple-choice question. Question: what does meiosis produce? Options: A. ova and spermatozoa B. rapid expansion C. Plant reproduction D. Most plants E. h2o F. less cells G. checks and balances H. members of their own species Which option is correct and why?

The correct answer is: ova and spermatozoa.

A

What causes a gas to condense?

[ "Energy.", "kinetic energy", "Water expanding", "It gets heated up", "It expands", "circulatory system", "reduced heat", "less water" ]

reduced heat

Answer the following multiple-choice question. Question: What causes a gas to condense? Options: A. Energy. B. kinetic energy C. Water expanding D. It gets heated up E. It expands F. circulatory system G. reduced heat H. less water Which option is correct and why?

The correct answer is: reduced heat.

A

A way to conserve something is to

[ "use it up", "use it sparsely", "use it quickly", "finish it off" ]

use it sparsely

Answer the following multiple-choice question. Question: A way to conserve something is to Options: A. use it up B. use it sparsely C. use it quickly D. finish it off Which option is correct and why?

The correct answer is: use it sparsely.

B

Which two objects are likely to be magnetic?

[ "a cell phone and a coffee mug", "a credit card and the register", "a cat and a dog", "a tree and a power line" ]

a credit card and the register

Answer the following multiple-choice question. Question: Which two objects are likely to be magnetic? Options: A. a cell phone and a coffee mug B. a credit card and the register C. a cat and a dog D. a tree and a power line Which option is correct and why?

The correct answer is: a credit card and the register.

B

Chicken and potatoes can be cooked in a pan on what?

[ "a paper towel", "on another chicken", "a stove", "in the freezer", "less water", "heat", "plates", "loose soil" ]

a stove

Answer the following multiple-choice question. Question: Chicken and potatoes can be cooked in a pan on what? Options: A. a paper towel B. on another chicken C. a stove D. in the freezer E. less water F. heat G. plates H. loose soil Which option is correct and why?

The correct answer is: a stove.

C

A decrease in trees may be attributed to

[ "dendrophilia", "hiking enthusiasts", "increased chainsaw sales", "nature photographers" ]

increased chainsaw sales

Answer the following multiple-choice question. Question: A decrease in trees may be attributed to Options: A. dendrophilia B. hiking enthusiasts C. increased chainsaw sales D. nature photographers Which option is correct and why?

The correct answer is: increased chainsaw sales.

C

What natural disaster is california most linked with?

[ "earthquakes", "hurricanes", "fires", "volcanoes" ]

earthquakes

Answer the following multiple-choice question. Question: What natural disaster is california most linked with? Options: A. earthquakes B. hurricanes C. fires D. volcanoes Which option is correct and why?

The correct answer is: earthquakes.

A

The decline of speed is associated with what?

[ "an object gaining energy", "a lot of human deaths", "decrease stamina", "hyperthyroidism", "an object losing energy", "an object gaining momentum", "body temperature reduces", "an object going faster" ]

an object losing energy

Answer the following multiple-choice question. Question: The decline of speed is associated with what? Options: A. an object gaining energy B. a lot of human deaths C. decrease stamina D. hyperthyroidism E. an object losing energy F. an object gaining momentum G. body temperature reduces H. an object going faster Which option is correct and why?

The correct answer is: an object losing energy.

E

Lisa was hiking in a rocky area and in a rock, she saw what looked like footprints made by a bird. But weirdly, they were in a rock. Where did they come from?

[ "The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock", "The rock was actually an asteroid", "a very heavy bird made imprints in the rock.", "a spaceship used a laser to make the etches in the rock" ]

The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock

Answer the following multiple-choice question. Question: Lisa was hiking in a rocky area and in a rock, she saw what looked like footprints made by a bird. But weirdly, they were in a rock. Where did they come from? Options: A. The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock B. The rock was actually an asteroid C. a very heavy bird made imprints in the rock. D. a spaceship used a laser to make the etches in the rock Which option is correct and why?

The correct answer is: The footprints were originally in mud or peat, but after a lot of time, the substance had been changed into rock.

A

What may be stored in sedimentary rock for millions of years.

[ "Sand castles", "Chemical energy", "heat energy", "Millions of dollars.", "A fuel source.", "Energy.", "In sediment", "Stored animal fur." ]

A fuel source.

Answer the following multiple-choice question. Question: What may be stored in sedimentary rock for millions of years. Options: A. Sand castles B. Chemical energy C. heat energy D. Millions of dollars. E. A fuel source. F. Energy. G. In sediment H. Stored animal fur. Which option is correct and why?

The correct answer is: A fuel source..

E

What organelles that are found in the cells of mosses.

[ "chloroplasts", "epidermal", "sensory neurons", "an organism's body", "more abundant", "Epidermis", "produce light", "it needs them" ]

chloroplasts

Answer the following multiple-choice question. Question: What organelles that are found in the cells of mosses. Options: A. chloroplasts B. epidermal C. sensory neurons D. an organism's body E. more abundant F. Epidermis G. produce light H. it needs them Which option is correct and why?

The correct answer is: chloroplasts.

A

Plants require

[ "oxygen", "H2O", "Fe", "clouds" ]

H2O

Answer the following multiple-choice question. Question: Plants require Options: A. oxygen B. H2O C. Fe D. clouds Which option is correct and why?

The correct answer is: H2O.

B

A flower's colors come from what part of the plant?

[ "vacuole", "Internode", "Petiole", "glycogen" ]

vacuole

Answer the following multiple-choice question. Question: A flower's colors come from what part of the plant? Options: A. vacuole B. Internode C. Petiole D. glycogen Which option is correct and why?

The correct answer is: vacuole.

A

Flowers attract

[ "bees", "parasites", "electrons", "insects", "pollen", "plant life", "carbon", "honeybees" ]

insects

Answer the following multiple-choice question. Question: Flowers attract Options: A. bees B. parasites C. electrons D. insects E. pollen F. plant life G. carbon H. honeybees Which option is correct and why?

The correct answer is: insects.

D

A girl with a burn scar on her arm was most likely

[ "in a swimming pool", "in a safe space", "near a running kiln", "protected from any injury" ]

near a running kiln

Answer the following multiple-choice question. Question: A girl with a burn scar on her arm was most likely Options: A. in a swimming pool B. in a safe space C. near a running kiln D. protected from any injury Which option is correct and why?

The correct answer is: near a running kiln.

C

Mammals are synapsids, meaning they have a single opening in what structure?

[ "spine", "hip", "heart", "skull" ]

skull

Answer the following multiple-choice question. Question: Mammals are synapsids, meaning they have a single opening in what structure? Options: A. spine B. hip C. heart D. skull Which option is correct and why?

The correct answer is: skull.

D

What do the cells in the front of a volvox typically develop to help swim towards light?

[ "sunspots", "tumors", "eyespots", "vertebrates" ]

eyespots

Answer the following multiple-choice question. Question: What do the cells in the front of a volvox typically develop to help swim towards light? Options: A. sunspots B. tumors C. eyespots D. vertebrates Which option is correct and why?

The correct answer is: eyespots.

C

What are small organelles and are the site of protein synthesis called.

[ "chloroplasts", "chromosomes", "ribosomes", "chromosomes" ]

ribosomes

Answer the following multiple-choice question. Question: What are small organelles and are the site of protein synthesis called. Options: A. chloroplasts B. chromosomes C. ribosomes D. chromosomes Which option is correct and why?

The correct answer is: ribosomes.

C

What is more complex in eukaryotes than prokaryotes?

[ "migraines", "pollen", "cancer", "orchids", "genes", "a cuticle", "A computer", "mitosis" ]

mitosis

Answer the following multiple-choice question. Question: What is more complex in eukaryotes than prokaryotes? Options: A. migraines B. pollen C. cancer D. orchids E. genes F. a cuticle G. A computer H. mitosis Which option is correct and why?

The correct answer is: mitosis.

A

If a creature is building a soft space for sitting and roosting, it is likely

[ "a chickadee", "a rabbit", "a ferret", "a dog" ]

a chickadee

Answer the following multiple-choice question. Question: If a creature is building a soft space for sitting and roosting, it is likely Options: A. a chickadee B. a rabbit C. a ferret D. a dog Which option is correct and why?

The correct answer is: a chickadee.

A

How do we track canyon changes?

[ "LEDs", "wind", "forces", "river", "slow", "Pins", "Raft", "three" ]

Pins

Answer the following multiple-choice question. Question: How do we track canyon changes? Options: A. LEDs B. wind C. forces D. river E. slow F. Pins G. Raft H. three Which option is correct and why?

The correct answer is: Pins.

A

What happens to the shape of the card when you bend it into three sections?

[ "mechanical", "squeeze", "heat", "Changes", "rips", "It expands", "modify", "mutates" ]

Changes

Answer the following multiple-choice question. Question: What happens to the shape of the card when you bend it into three sections? Options: A. mechanical B. squeeze C. heat D. Changes E. rips F. It expands G. modify H. mutates Which option is correct and why?

The correct answer is: Changes.

D

What are the properties of solutions called that depend only on the concentration of dissolved particles and not on their identity?

[ "platyhelminth properties", "platyhelminth properties", "colligative properties", "platyhelminth properties" ]

colligative properties

Answer the following multiple-choice question. Question: What are the properties of solutions called that depend only on the concentration of dissolved particles and not on their identity? Options: A. platyhelminth properties B. platyhelminth properties C. colligative properties D. platyhelminth properties Which option is correct and why?

The correct answer is: colligative properties.

C

What are floods a source of on a floodplain?

[ "nutrients", "salt", "acids", "minerals" ]

nutrients

Answer the following multiple-choice question. Question: What are floods a source of on a floodplain? Options: A. nutrients B. salt C. acids D. minerals Which option is correct and why?

The correct answer is: nutrients.

A

Producers at the base of ecological food webs are also known as?

[ "autotrophic", "endoscopic", "mutualistic", "symbiotic" ]

autotrophic

Answer the following multiple-choice question. Question: Producers at the base of ecological food webs are also known as? Options: A. autotrophic B. endoscopic C. mutualistic D. symbiotic Which option is correct and why?

The correct answer is: autotrophic.

A

What reaction is considered the reverse of photosynthesis?

[ "cellular decay", "cellular transfer", "cellular digestion", "cellular respiration" ]

cellular respiration

Answer the following multiple-choice question. Question: What reaction is considered the reverse of photosynthesis? Options: A. cellular decay B. cellular transfer C. cellular digestion D. cellular respiration Which option is correct and why?

The correct answer is: cellular respiration.

D

What is essential to all living organisms?

[ "garbage", "Energy.", "hydration", "gifts", "food and shelter", "Chemical energy", "poison", "The atmosphere" ]

The atmosphere

Answer the following multiple-choice question. Question: What is essential to all living organisms? Options: A. garbage B. Energy. C. hydration D. gifts E. food and shelter F. Chemical energy G. poison H. The atmosphere Which option is correct and why?

The correct answer is: The atmosphere.

A

What do ocean mollusks use to absorb oxygen from the water?

[ "shells", "gills", "pores", "scales" ]

gills

Answer the following multiple-choice question. Question: What do ocean mollusks use to absorb oxygen from the water? Options: A. shells B. gills C. pores D. scales Which option is correct and why?

The correct answer is: gills.

B

What might have a negative impact on a child

[ "buying them things", "hitting them", "loving them", "hugging them" ]

hitting them

Answer the following multiple-choice question. Question: What might have a negative impact on a child Options: A. buying them things B. hitting them C. loving them D. hugging them Which option is correct and why?

The correct answer is: hitting them.

B

What term is used to describe animals that excrete ammonia?

[ "xerophyte", "spirogyra", "ammonotelic", "ammonstand" ]

ammonotelic

Answer the following multiple-choice question. Question: What term is used to describe animals that excrete ammonia? Options: A. xerophyte B. spirogyra C. ammonotelic D. ammonstand Which option is correct and why?

The correct answer is: ammonotelic.

C

when organisms die, they

[ "reproduce", "wither away", "petrify", "regenerate" ]

wither away

Answer the following multiple-choice question. Question: when organisms die, they Options: A. reproduce B. wither away C. petrify D. regenerate Which option is correct and why?

The correct answer is: wither away.

B

A star produces light energy and heat because it has a variety of

[ "moon rotation causing friction", "light energy flowing to earth", "reactions of nuclear form", "global warming caused by co2" ]

reactions of nuclear form

Answer the following multiple-choice question. Question: A star produces light energy and heat because it has a variety of Options: A. moon rotation causing friction B. light energy flowing to earth C. reactions of nuclear form D. global warming caused by co2 Which option is correct and why?

The correct answer is: reactions of nuclear form.

C

The distance between two crests of a wave of light is referred to as what, which is related to the color of light?

[ "bandwidth", "spectrum", "magnitude", "wavelength" ]

wavelength

Answer the following multiple-choice question. Question: The distance between two crests of a wave of light is referred to as what, which is related to the color of light? Options: A. bandwidth B. spectrum C. magnitude D. wavelength Which option is correct and why?

The correct answer is: wavelength.

D

What type of trunk does evergreen usually have?

[ "oak", "greenwood", "woody", "bark", "hollowed", "Spruce", "spiny", "bent" ]

woody

Answer the following multiple-choice question. Question: What type of trunk does evergreen usually have? Options: A. oak B. greenwood C. woody D. bark E. hollowed F. Spruce G. spiny H. bent Which option is correct and why?

The correct answer is: woody.

C

How do platypus lay eggs?

[ "epidermis and dermis", "on a flat plane", "in a tree", "fur and fat", "during the day", "it keeps an organism warm", "in a dug out area", "in the water" ]

in a dug out area

Answer the following multiple-choice question. Question: How do platypus lay eggs? Options: A. epidermis and dermis B. on a flat plane C. in a tree D. fur and fat E. during the day F. it keeps an organism warm G. in a dug out area H. in the water Which option is correct and why?

The correct answer is: in a dug out area.

A

what can make proteins?

[ "animal transport", "volume", "prokaryotes", "heating liquids", "Cooking", "h2o", "density", "animals" ]

prokaryotes

Answer the following multiple-choice question. Question: what can make proteins? Options: A. animal transport B. volume C. prokaryotes D. heating liquids E. Cooking F. h2o G. density H. animals Which option is correct and why?

The correct answer is: prokaryotes.

C

An example of a simple machine requiring mechanical energy in order to function would be

[ "a light that needs a crank to be turned", "a radio that needs four batteries", "a computer that needs to be plugged in", "a stove that works on gas" ]

a light that needs a crank to be turned

Answer the following multiple-choice question. Question: An example of a simple machine requiring mechanical energy in order to function would be Options: A. a light that needs a crank to be turned B. a radio that needs four batteries C. a computer that needs to be plugged in D. a stove that works on gas Which option is correct and why?

The correct answer is: a light that needs a crank to be turned.

A

Earthworms are terrific for plants and are important what?

[ "deposit feeders", "more abundant", "grounders", "agriculture", "Quality of life", "the environment", "dirt grubbers", "bird enemies" ]

deposit feeders

Answer the following multiple-choice question. Question: Earthworms are terrific for plants and are important what? Options: A. deposit feeders B. more abundant C. grounders D. agriculture E. Quality of life F. the environment G. dirt grubbers H. bird enemies Which option is correct and why?

The correct answer is: deposit feeders.

A

ats and proteins can be used for energy by the cells of what?

[ "mammals", "Plants growth", "Most plants", "our planet", "microorganisms", "bacteria", "most organisms", "animals" ]

most organisms

Answer the following multiple-choice question. Question: ats and proteins can be used for energy by the cells of what? Options: A. mammals B. Plants growth C. Most plants D. our planet E. microorganisms F. bacteria G. most organisms H. animals Which option is correct and why?

The correct answer is: most organisms.

A

While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what?

[ "datum", "egg", "ovum", "semen" ]

ovum

Answer the following multiple-choice question. Question: While spermatogenesis produces four haploid sperm cells, oogenesis produces one mature what? Options: A. datum B. egg C. ovum D. semen Which option is correct and why?

The correct answer is: ovum.

C

what is a prism used to refract?

[ "Something that can be auburn", "basic building blocks of life", "mirrors", "our nearest star", "wavelengths and photons", "microwaves", "triangles", "focusing a lens" ]

wavelengths and photons

Answer the following multiple-choice question. Question: what is a prism used to refract? Options: A. Something that can be auburn B. basic building blocks of life C. mirrors D. our nearest star E. wavelengths and photons F. microwaves G. triangles H. focusing a lens Which option is correct and why?

The correct answer is: wavelengths and photons.

E

What is formed from extreme heat and pressure?

[ "glass", "marble", "crust", "soils", "coal", "sugar", "calcite", "arteries" ]

marble

Answer the following multiple-choice question. Question: What is formed from extreme heat and pressure? Options: A. glass B. marble C. crust D. soils E. coal F. sugar G. calcite H. arteries Which option is correct and why?

The correct answer is: marble.

B

What occurs when muscle fibers get longer?

[ "photosynthesis", "rapid expansion", "kinetic energy", "cramps", "relaxation", "fertilization", "movement", "sweating" ]

relaxation

Answer the following multiple-choice question. Question: What occurs when muscle fibers get longer? Options: A. photosynthesis B. rapid expansion C. kinetic energy D. cramps E. relaxation F. fertilization G. movement H. sweating Which option is correct and why?

The correct answer is: relaxation.

E

Catalysts require proper what to work?

[ "DNA", "pH", "pan", "RNA", "elevation", "time of day", "gas", "humidity" ]

pH

Answer the following multiple-choice question. Question: Catalysts require proper what to work? Options: A. DNA B. pH C. pan D. RNA E. elevation F. time of day G. gas H. humidity Which option is correct and why?

The correct answer is: pH.

B

Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these?

[ "phases of mass", "phases of matter", "forms of substances", "types of atoms" ]

phases of matter

Answer the following multiple-choice question. Question: Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these? Options: A. phases of mass B. phases of matter C. forms of substances D. types of atoms Which option is correct and why?

The correct answer is: phases of matter.

B

Vertebrates lacking what structures often use lungs for gas exchange?

[ "spores", "pores", "nostrils", "gills" ]

gills

Answer the following multiple-choice question. Question: Vertebrates lacking what structures often use lungs for gas exchange? Options: A. spores B. pores C. nostrils D. gills Which option is correct and why?

The correct answer is: gills.

D

What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called?

[ "radioactive decay", "nuclear decay", "initial decay", "radioactive decrease" ]

radioactive decay

Answer the following multiple-choice question. Question: What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called? Options: A. radioactive decay B. nuclear decay C. initial decay D. radioactive decrease Which option is correct and why?

The correct answer is: radioactive decay.

A

What are the preserved remains of animals, plants, and other organisms called?

[ "basalt", "rocks", "skulls", "fossils" ]

fossils

Answer the following multiple-choice question. Question: What are the preserved remains of animals, plants, and other organisms called? Options: A. basalt B. rocks C. skulls D. fossils Which option is correct and why?

The correct answer is: fossils.

D

Jackrabbits' hind legs are

[ "weak", "stubby", "elongated", "short" ]

elongated

Answer the following multiple-choice question. Question: Jackrabbits' hind legs are Options: A. weak B. stubby C. elongated D. short Which option is correct and why?

The correct answer is: elongated.

C

What do astronauts require for long flights?

[ "problems", "nutrients", "glycogen", "danger", "energy", "sugar", "hydration", "trouble" ]

energy

Answer the following multiple-choice question. Question: What do astronauts require for long flights? Options: A. problems B. nutrients C. glycogen D. danger E. energy F. sugar G. hydration H. trouble Which option is correct and why?

The correct answer is: energy.

E

What is the term for the process in which an area that has never before been colonized changes through time?

[ "ecological succession", "environmental succession", "continuous succession", "colony succession" ]

ecological succession

Answer the following multiple-choice question. Question: What is the term for the process in which an area that has never before been colonized changes through time? Options: A. ecological succession B. environmental succession C. continuous succession D. colony succession Which option is correct and why?

The correct answer is: ecological succession.

A

What is the first part of the large intestine, where wastes enter from the small intestine?

[ "the cecum", "stomach", "bowel", "esophagus" ]

the cecum

Answer the following multiple-choice question. Question: What is the first part of the large intestine, where wastes enter from the small intestine? Options: A. the cecum B. stomach C. bowel D. esophagus Which option is correct and why?

The correct answer is: the cecum.

A

An example of an animal that has permeable skin is

[ "a fish", "goats", "a fox", "mammals", "an iguana", "rabbit", "a frog", "a shark" ]

a frog

Answer the following multiple-choice question. Question: An example of an animal that has permeable skin is Options: A. a fish B. goats C. a fox D. mammals E. an iguana F. rabbit G. a frog H. a shark Which option is correct and why?

The correct answer is: a frog.

A

Nuclear changes occur with a simultaneous release of what, and a slight drop in mass?

[ "hydrogen", "mineral", "energy", "oil" ]

energy

Answer the following multiple-choice question. Question: Nuclear changes occur with a simultaneous release of what, and a slight drop in mass? Options: A. hydrogen B. mineral C. energy D. oil Which option is correct and why?

The correct answer is: energy.

C

What requires energy for survival?

[ "squids", "Bats", "humans", "sunlight", "water", "animals", "rocks", "trees" ]

trees

Answer the following multiple-choice question. Question: What requires energy for survival? Options: A. squids B. Bats C. humans D. sunlight E. water F. animals G. rocks H. trees Which option is correct and why?

The correct answer is: trees.

A

Vertebrates also require relatively large quantities of calcium and phosphorus for building and maintaining what?

[ "blood", "metabolism", "brain cells", "bone" ]

bone

Answer the following multiple-choice question. Question: Vertebrates also require relatively large quantities of calcium and phosphorus for building and maintaining what? Options: A. blood B. metabolism C. brain cells D. bone Which option is correct and why?

The correct answer is: bone.

D

What device is a magnetic disc that provides long-term storage for programs and data?

[ "cassette", "hard drive", "software", "floppy drive" ]

hard drive

Answer the following multiple-choice question. Question: What device is a magnetic disc that provides long-term storage for programs and data? Options: A. cassette B. hard drive C. software D. floppy drive Which option is correct and why?

The correct answer is: hard drive.

B

Many discrete characters are determined by a single gene locus with different alleles that produce distinct what?

[ "phenotypes", "phototypes", "clusters", "subtypes" ]

phenotypes

Answer the following multiple-choice question. Question: Many discrete characters are determined by a single gene locus with different alleles that produce distinct what? Options: A. phenotypes B. phototypes C. clusters D. subtypes Which option is correct and why?

The correct answer is: phenotypes.

A

what is a mirror used for reflecting?

[ "density", "Large.", "gravity", "fibers", "LEDs", "eyes", "Glass", "air" ]

LEDs

Answer the following multiple-choice question. Question: what is a mirror used for reflecting? Options: A. density B. Large. C. gravity D. fibers E. LEDs F. eyes G. Glass H. air Which option is correct and why?

The correct answer is: LEDs.

E

What is the only way to completely avoid stis?

[ "contraceptive use", "cover your mouth", "avoid sexual contact", "oral sex" ]

avoid sexual contact

Answer the following multiple-choice question. Question: What is the only way to completely avoid stis? Options: A. contraceptive use B. cover your mouth C. avoid sexual contact D. oral sex Which option is correct and why?

The correct answer is: avoid sexual contact.

C

Mutations that lead to cancer usually effect genes that aid in what?

[ "illness", "health", "disease", "blood transfer", "chemotherapy", "respiraration", "mitosis", "recovery" ]

mitosis

Answer the following multiple-choice question. Question: Mutations that lead to cancer usually effect genes that aid in what? Options: A. illness B. health C. disease D. blood transfer E. chemotherapy F. respiraration G. mitosis H. recovery Which option is correct and why?

The correct answer is: mitosis.

A

Concentric circles that spread out through the water around the droplets are actually types of what moving through the water?

[ "winds", "lines", "waves", "troughs" ]

waves

Answer the following multiple-choice question. Question: Concentric circles that spread out through the water around the droplets are actually types of what moving through the water? Options: A. winds B. lines C. waves D. troughs Which option is correct and why?

The correct answer is: waves.

C

What are two ways cnidarians are able to reproduce?

[ "asexually and sexually", "internally and externally", "spawning and sexual", "mitosis and meiosis" ]

asexually and sexually

Answer the following multiple-choice question. Question: What are two ways cnidarians are able to reproduce? Options: A. asexually and sexually B. internally and externally C. spawning and sexual D. mitosis and meiosis Which option is correct and why?

The correct answer is: asexually and sexually.

A

How much space a surface covers is known as what?

[ "area", "Flatness", "Lenght", "Height" ]

area

Answer the following multiple-choice question. Question: How much space a surface covers is known as what? Options: A. area B. Flatness C. Lenght D. Height Which option is correct and why?

The correct answer is: area.

A

what do animals use for energy?

[ "hydrogen", "chemicals", "vitamin C", "nitrogen", "food", "glucose", "Nutrients", "soil" ]

glucose

Answer the following multiple-choice question. Question: what do animals use for energy? Options: A. hydrogen B. chemicals C. vitamin C D. nitrogen E. food F. glucose G. Nutrients H. soil Which option is correct and why?

The correct answer is: glucose.

A

A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called what?

[ "clamon", "endosperm", "thallus", "coelom" ]

coelom

Answer the following multiple-choice question. Question: A hydrostatic skeleton is a skeleton formed by a fluid-filled compartment within the body, called what? Options: A. clamon B. endosperm C. thallus D. coelom Which option is correct and why?

The correct answer is: coelom.

D

What happens when antibodies are transferred to a person who has never been exposed to the pathogen?

[ "acquired immunity", "passive immunity", "active disease", "allergic reaction" ]

passive immunity

Answer the following multiple-choice question. Question: What happens when antibodies are transferred to a person who has never been exposed to the pathogen? Options: A. acquired immunity B. passive immunity C. active disease D. allergic reaction Which option is correct and why?

The correct answer is: passive immunity.

B

Conservation of what property of ecosystems is the aim of measures like the endangered species act?

[ "bioremediation", "biodiversity", "Allopatric speciation", "natural selection" ]

biodiversity

Answer the following multiple-choice question. Question: Conservation of what property of ecosystems is the aim of measures like the endangered species act? Options: A. bioremediation B. biodiversity C. Allopatric speciation D. natural selection Which option is correct and why?

The correct answer is: biodiversity.

B

To warm yourself up on a chilly day

[ "rub your palms together", "wear short sleeve shirts", "go without any socks", "stand still in one place" ]

rub your palms together

Answer the following multiple-choice question. Question: To warm yourself up on a chilly day Options: A. rub your palms together B. wear short sleeve shirts C. go without any socks D. stand still in one place Which option is correct and why?

The correct answer is: rub your palms together.

A

A blackberry bush needing to photosynthesize would have difficulty

[ "under the sun", "at night", "in summer weather", "in daylight" ]

at night

Answer the following multiple-choice question. Question: A blackberry bush needing to photosynthesize would have difficulty Options: A. under the sun B. at night C. in summer weather D. in daylight Which option is correct and why?

The correct answer is: at night.

B

What layered form of carbon is used as a lubricant and in pencils?

[ "copper", "lead", "graphite", "carbonite" ]

graphite

Answer the following multiple-choice question. Question: What layered form of carbon is used as a lubricant and in pencils? Options: A. copper B. lead C. graphite D. carbonite Which option is correct and why?

The correct answer is: graphite.

C