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What is the unit used to measure air pressure?
[ "newtons", "pounds per inch", "millibar", "mass" ]
millibar
Answer the following multiple-choice question. Question: What is the unit used to measure air pressure? Options: A. newtons B. pounds per inch C. millibar D. mass Which option is correct and why?
The correct answer is: millibar.
In which stage does the chromatin condense into chromosomes?
[ "prophase ii", "Telophase II", "Anaphase I", "Metaphase I" ]
prophase ii
Answer the following multiple-choice question. Question: In which stage does the chromatin condense into chromosomes? Options: A. prophase ii B. Telophase II C. Anaphase I D. Metaphase I Which option is correct and why?
The correct answer is: prophase ii.
What is the upper-most atmosphere known as?
[ "ionosphere", "xerosphere", "thermosphere", "exosphere" ]
thermosphere
Answer the following multiple-choice question. Question: What is the upper-most atmosphere known as? Options: A. ionosphere B. xerosphere C. thermosphere D. exosphere Which option is correct and why?
The correct answer is: thermosphere.
Reproduction that doesn't involve a male gamete is also known as what?
[ "agamogenesis", "mitosis", "asexual reproduction", "meiosis" ]
agamogenesis
Answer the following multiple-choice question. Question: Reproduction that doesn't involve a male gamete is also known as what? Options: A. agamogenesis B. mitosis C. asexual reproduction D. meiosis Which option is correct and why?
The correct answer is: agamogenesis.
What is the term for an electronic component that consists of many other electronic components?
[ "creating circuit", "electrical current", "networks", "integrated circuit" ]
integrated circuit
Answer the following multiple-choice question. Question: What is the term for an electronic component that consists of many other electronic components? Options: A. creating circuit B. electrical current C. networks D. integrated circuit Which option is correct and why?
The correct answer is: integrated circuit.
What is another term for life science?
[ "meteorology", "biology", "geology", "ecology" ]
biology
Answer the following multiple-choice question. Question: What is another term for life science? Options: A. meteorology B. biology C. geology D. ecology Which option is correct and why?
The correct answer is: biology.
What type of cartilage contains no collagen?
[ "shark cartilage", "lamprey cartilage", "fetal cartilage", "joint cartilage" ]
lamprey cartilage
Answer the following multiple-choice question. Question: What type of cartilage contains no collagen? Options: A. shark cartilage B. lamprey cartilage C. fetal cartilage D. joint cartilage Which option is correct and why?
The correct answer is: lamprey cartilage.
In prokaryotes, what are the regions called that repressors bind to?
[ "elements", "enablers", "consumers", "operators" ]
operators
Answer the following multiple-choice question. Question: In prokaryotes, what are the regions called that repressors bind to? Options: A. elements B. enablers C. consumers D. operators Which option is correct and why?
The correct answer is: operators.
What instrument has a resolution many times greater than a light microscope, and can be used to see the details on the outside of a cell?
[ "element microscope", "complex microscope", "molecular microscope", "electron microscope" ]
electron microscope
Answer the following multiple-choice question. Question: What instrument has a resolution many times greater than a light microscope, and can be used to see the details on the outside of a cell? Options: A. element microscope B. complex microscope C. molecular microscope D. electron microscope Which option is correct and why?
The correct answer is: electron microscope.
The temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place is called?
[ "melting point", "last point", "boiling point", "occurring point" ]
melting point
Answer the following multiple-choice question. Question: The temperature at which the individual ions have enough kinetic energy to overcome the attractive forces that hold them in place is called? Options: A. melting point B. last point C. boiling point D. occurring point Which option is correct and why?
The correct answer is: melting point.
What play several important roles in the human body?
[ "lipids", "tissues", "organs", "cells" ]
lipids
Answer the following multiple-choice question. Question: What play several important roles in the human body? Options: A. lipids B. tissues C. organs D. cells Which option is correct and why?
The correct answer is: lipids.
What is a measure that has both size and direction?
[ "wave", "vector", "velocity", "length" ]
vector
Answer the following multiple-choice question. Question: What is a measure that has both size and direction? Options: A. wave B. vector C. velocity D. length Which option is correct and why?
The correct answer is: vector.
What is to blame for water’s boiling point (100°c) being higher than the boiling points of similar substances?
[ "electrode bonds", "helium bonds", "molecular shape", "hydrogen bonds" ]
hydrogen bonds
Answer the following multiple-choice question. Question: What is to blame for water’s boiling point (100°c) being higher than the boiling points of similar substances? Options: A. electrode bonds B. helium bonds C. molecular shape D. hydrogen bonds Which option is correct and why?
The correct answer is: hydrogen bonds.
Carbonic acid decomposes easily at room temperature into carbon dioxide and what else?
[ "helium", "oxygen", "water", "gas" ]
water
Answer the following multiple-choice question. Question: Carbonic acid decomposes easily at room temperature into carbon dioxide and what else? Options: A. helium B. oxygen C. water D. gas Which option is correct and why?
The correct answer is: water.
What form when a single atom gains or loses electrons?
[ "carbon atoms", "monatomic ions", "fusional ions", "vacuoles ions" ]
monatomic ions
Answer the following multiple-choice question. Question: What form when a single atom gains or loses electrons? Options: A. carbon atoms B. monatomic ions C. fusional ions D. vacuoles ions Which option is correct and why?
The correct answer is: monatomic ions.
In earthworms, the skin serves as what type of organ?
[ "respiratory", "kidney", "reproductive", "excretory" ]
respiratory
Answer the following multiple-choice question. Question: In earthworms, the skin serves as what type of organ? Options: A. respiratory B. kidney C. reproductive D. excretory Which option is correct and why?
The correct answer is: respiratory.
Catalytic converters used on motor vehicles break down pollutants in what, yielding non-toxic compounds?
[ "exhaust", "intake", "oil", "muffler" ]
exhaust
Answer the following multiple-choice question. Question: Catalytic converters used on motor vehicles break down pollutants in what, yielding non-toxic compounds? Options: A. exhaust B. intake C. oil D. muffler Which option is correct and why?
The correct answer is: exhaust.
Processing of filtrate in the proximal tubule helps maintain what level in body fluid?
[ "homeostasis", "ph", "metabolic level", "temperature" ]
ph
Answer the following multiple-choice question. Question: Processing of filtrate in the proximal tubule helps maintain what level in body fluid? Options: A. homeostasis B. ph C. metabolic level D. temperature Which option is correct and why?
The correct answer is: ph.
What helps represent age-sex structure of the population?
[ "density graph", "biome model", "habitat chart", "population pyramid" ]
population pyramid
Answer the following multiple-choice question. Question: What helps represent age-sex structure of the population? Options: A. density graph B. biome model C. habitat chart D. population pyramid Which option is correct and why?
The correct answer is: population pyramid.
Large viruses began as what type of cells inside bigger host cells?
[ "static", "simple", "parasitic", "symbiotic" ]
parasitic
Answer the following multiple-choice question. Question: Large viruses began as what type of cells inside bigger host cells? Options: A. static B. simple C. parasitic D. symbiotic Which option is correct and why?
The correct answer is: parasitic.
How can you calculate the density of matter?
[ "by dividing its volume by its mass", "by multiplying its mass by its volume", "by subtracting mass from volume", "by dividing its mass by its volume" ]
by dividing its mass by its volume
Answer the following multiple-choice question. Question: How can you calculate the density of matter? Options: A. by dividing its volume by its mass B. by multiplying its mass by its volume C. by subtracting mass from volume D. by dividing its mass by its volume Which option is correct and why?
The correct answer is: by dividing its mass by its volume.
Frogs and toads have long back legs which are specialized for what action?
[ "sprinting", "flying", "jumping", "swimming" ]
jumping
Answer the following multiple-choice question. Question: Frogs and toads have long back legs which are specialized for what action? Options: A. sprinting B. flying C. jumping D. swimming Which option is correct and why?
The correct answer is: jumping.
Different regions of the cerebral cortex can be associated with particular functions, a concept known as what?
[ "expressiveness of function", "reversal of function", "cytoplasm of function", "localization of function" ]
localization of function
Answer the following multiple-choice question. Question: Different regions of the cerebral cortex can be associated with particular functions, a concept known as what? Options: A. expressiveness of function B. reversal of function C. cytoplasm of function D. localization of function Which option is correct and why?
The correct answer is: localization of function.
What is the term for a change in the inherited traits of organisms over time?
[ "evolution", "generation", "emergence", "mutation" ]
evolution
Answer the following multiple-choice question. Question: What is the term for a change in the inherited traits of organisms over time? Options: A. evolution B. generation C. emergence D. mutation Which option is correct and why?
The correct answer is: evolution.
What type of diseases do antibiotics not affect?
[ "animal stings", "cancer", "autoimmune diseases", "viruses" ]
viruses
Answer the following multiple-choice question. Question: What type of diseases do antibiotics not affect? Options: A. animal stings B. cancer C. autoimmune diseases D. viruses Which option is correct and why?
The correct answer is: viruses.
Which system carries out long-distance transport of materials between the root and shoot systems?
[ "vascular tissue system", "perceptual tissue system", "circulatory tissue system", "reproductive tissue system" ]
vascular tissue system
Answer the following multiple-choice question. Question: Which system carries out long-distance transport of materials between the root and shoot systems? Options: A. vascular tissue system B. perceptual tissue system C. circulatory tissue system D. reproductive tissue system Which option is correct and why?
The correct answer is: vascular tissue system.
How do reptiles typically reproduce?
[ "asexually", "sexually", "live birth", "cloning" ]
sexually
Answer the following multiple-choice question. Question: How do reptiles typically reproduce? Options: A. asexually B. sexually C. live birth D. cloning Which option is correct and why?
The correct answer is: sexually.
All organisms must adapt to what in order to survive?
[ "natural", "conditions", "environment", "weather" ]
environment
Answer the following multiple-choice question. Question: All organisms must adapt to what in order to survive? Options: A. natural B. conditions C. environment D. weather Which option is correct and why?
The correct answer is: environment.
Biochemical compounds that include sugars, starches, and cellulose are examples of what?
[ "lipids", "proteins", "electrolytes", "carbohydrates" ]
carbohydrates
Answer the following multiple-choice question. Question: Biochemical compounds that include sugars, starches, and cellulose are examples of what? Options: A. lipids B. proteins C. electrolytes D. carbohydrates Which option is correct and why?
The correct answer is: carbohydrates.
What emerges from an insect egg?
[ "larva", "parasite", "cocoon", "fungi" ]
larva
Answer the following multiple-choice question. Question: What emerges from an insect egg? Options: A. larva B. parasite C. cocoon D. fungi Which option is correct and why?
The correct answer is: larva.
What can protons and neutrons be broken down into?
[ "quarks", "molecules", "ions", "strings" ]
quarks
Answer the following multiple-choice question. Question: What can protons and neutrons be broken down into? Options: A. quarks B. molecules C. ions D. strings Which option is correct and why?
The correct answer is: quarks.
What is the name of the stage of life when a child becomes sexually mature?
[ "adolescence", "puberty", "growth spurt", "maturity" ]
puberty
Answer the following multiple-choice question. Question: What is the name of the stage of life when a child becomes sexually mature? Options: A. adolescence B. puberty C. growth spurt D. maturity Which option is correct and why?
The correct answer is: puberty.
What part of the brain is divided from front to back into the left and right hemispheres?
[ "medula oblongata", "cerebellum", "thalmus", "cerebrum" ]
cerebrum
Answer the following multiple-choice question. Question: What part of the brain is divided from front to back into the left and right hemispheres? Options: A. medula oblongata B. cerebellum C. thalmus D. cerebrum Which option is correct and why?
The correct answer is: cerebrum.
Because their cells are arranged in bundles, the appearance of skeletal and cardiac muscles is described as what?
[ "quadrant", "cylindrical", "striated", "incised" ]
striated
Answer the following multiple-choice question. Question: Because their cells are arranged in bundles, the appearance of skeletal and cardiac muscles is described as what? Options: A. quadrant B. cylindrical C. striated D. incised Which option is correct and why?
The correct answer is: striated.
What resource is considered nonrewable for human purposes, because it takes so long to form and is depleted by farming and other activities?
[ "sunshine", "acid", "soil", "water" ]
soil
Answer the following multiple-choice question. Question: What resource is considered nonrewable for human purposes, because it takes so long to form and is depleted by farming and other activities? Options: A. sunshine B. acid C. soil D. water Which option is correct and why?
The correct answer is: soil.
What in orange juice makes it taste sour?
[ "acetic acid", "carbonation", "citric acid", "amino acid" ]
citric acid
Answer the following multiple-choice question. Question: What in orange juice makes it taste sour? Options: A. acetic acid B. carbonation C. citric acid D. amino acid Which option is correct and why?
The correct answer is: citric acid.
What scientist created the modern system for classifying organisms?
[ "Pasteur", "Bohr", "Newton", "linnaeus" ]
linnaeus
Answer the following multiple-choice question. Question: What scientist created the modern system for classifying organisms? Options: A. Pasteur B. Bohr C. Newton D. linnaeus Which option is correct and why?
The correct answer is: linnaeus.
What will be the effect to an organism if its homeostasis is not maintained?
[ "death or disease", "healthy mental state", "slow aging", "weight regulation" ]
death or disease
Answer the following multiple-choice question. Question: What will be the effect to an organism if its homeostasis is not maintained? Options: A. death or disease B. healthy mental state C. slow aging D. weight regulation Which option is correct and why?
The correct answer is: death or disease.
Since warmer molecules have more energy, they are more what?
[ "active", "inactive", "abundant", "dense" ]
active
Answer the following multiple-choice question. Question: Since warmer molecules have more energy, they are more what? Options: A. active B. inactive C. abundant D. dense Which option is correct and why?
The correct answer is: active.
If only blue light strikes green leaves what happens to it?
[ "it is absorbed", "it causes cooling", "it causes heating", "it is reflected" ]
it is absorbed
Answer the following multiple-choice question. Question: If only blue light strikes green leaves what happens to it? Options: A. it is absorbed B. it causes cooling C. it causes heating D. it is reflected Which option is correct and why?
The correct answer is: it is absorbed.
Which type of animal creates useful substances such as honey, wax, lacquer, and silk?
[ "fungus", "insects", "spiders", "bacteria" ]
insects
Answer the following multiple-choice question. Question: Which type of animal creates useful substances such as honey, wax, lacquer, and silk? Options: A. fungus B. insects C. spiders D. bacteria Which option is correct and why?
The correct answer is: insects.
Stringed instruments can help show the relationship between tension and what in strings?
[ "volumes", "temperatures", "lengths", "frequencies" ]
frequencies
Answer the following multiple-choice question. Question: Stringed instruments can help show the relationship between tension and what in strings? Options: A. volumes B. temperatures C. lengths D. frequencies Which option is correct and why?
The correct answer is: frequencies.
Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what?
[ "altitude", "volume", "temperature", "density" ]
temperature
Answer the following multiple-choice question. Question: Ectotherms undergo a variety of changes at the cellular level to acclimatize to shifts in what? Options: A. altitude B. volume C. temperature D. density Which option is correct and why?
The correct answer is: temperature.
Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what?
[ "the apex", "focus", "the center", "the base" ]
focus
Answer the following multiple-choice question. Question: Convex lenses are thicker in the middle than at the edges so they cause rays of light to converge, or meet, at a point called what? Options: A. the apex B. focus C. the center D. the base Which option is correct and why?
The correct answer is: focus.
What are magnesium carbonate, aluminum hydroxide, and sodium bicarbonate commonly used as?
[ "antacids", "salts", "antidepressants", "antibiotics" ]
antacids
Answer the following multiple-choice question. Question: What are magnesium carbonate, aluminum hydroxide, and sodium bicarbonate commonly used as? Options: A. antacids B. salts C. antidepressants D. antibiotics Which option is correct and why?
The correct answer is: antacids.
What type of taste do bases normally have?
[ "sweet", "bitter", "sour", "salty" ]
bitter
Answer the following multiple-choice question. Question: What type of taste do bases normally have? Options: A. sweet B. bitter C. sour D. salty Which option is correct and why?
The correct answer is: bitter.
Which body part helps roundworm prevent their body from expanding?
[ "scales", "skin", "plate", "tough cuticle covering" ]
tough cuticle covering
Answer the following multiple-choice question. Question: Which body part helps roundworm prevent their body from expanding? Options: A. scales B. skin C. plate D. tough cuticle covering Which option is correct and why?
The correct answer is: tough cuticle covering.
The maintenance of constant conditions in the body is also known as what?
[ "homeostasis", "hypothesis", "consciousness", "mononucleosis" ]
homeostasis
Answer the following multiple-choice question. Question: The maintenance of constant conditions in the body is also known as what? Options: A. homeostasis B. hypothesis C. consciousness D. mononucleosis Which option is correct and why?
The correct answer is: homeostasis.
What is the term for tough protein fibers that connects bones to each other?
[ "cords", "muscles", "tetons", "ligaments" ]
ligaments
Answer the following multiple-choice question. Question: What is the term for tough protein fibers that connects bones to each other? Options: A. cords B. muscles C. tetons D. ligaments Which option is correct and why?
The correct answer is: ligaments.
What is the study of macroscopic properties, atomic properties, and phenomena in chemical systems?
[ "thermal chemistry", "differential chemistry", "molecular chemistry", "physical chemistry" ]
physical chemistry
Answer the following multiple-choice question. Question: What is the study of macroscopic properties, atomic properties, and phenomena in chemical systems? Options: A. thermal chemistry B. differential chemistry C. molecular chemistry D. physical chemistry Which option is correct and why?
The correct answer is: physical chemistry.
Bones, cartilage, and ligaments make up what anatomical system?
[ "Muscular system", "skeletal system", "Integumentary system", "Lymphatic system" ]
skeletal system
Answer the following multiple-choice question. Question: Bones, cartilage, and ligaments make up what anatomical system? Options: A. Muscular system B. skeletal system C. Integumentary system D. Lymphatic system Which option is correct and why?
The correct answer is: skeletal system.
What is the first part of the large intestine called?
[ "duodenum", "jejunum", "cecum", "colon" ]
cecum
Answer the following multiple-choice question. Question: What is the first part of the large intestine called? Options: A. duodenum B. jejunum C. cecum D. colon Which option is correct and why?
The correct answer is: cecum.
What occurs when nature reclaims areas formerly occupied by life?
[ "secondary succession", "primary succession", "typical succession", "tertiary succession" ]
secondary succession
Answer the following multiple-choice question. Question: What occurs when nature reclaims areas formerly occupied by life? Options: A. secondary succession B. primary succession C. typical succession D. tertiary succession Which option is correct and why?
The correct answer is: secondary succession.
To solubilize the fats so that they can be absorbed, what organ secretes a fluid called bile into the small intestine?
[ "stomach", "spleen", "small intestine", "gall bladder" ]
gall bladder
Answer the following multiple-choice question. Question: To solubilize the fats so that they can be absorbed, what organ secretes a fluid called bile into the small intestine? Options: A. stomach B. spleen C. small intestine D. gall bladder Which option is correct and why?
The correct answer is: gall bladder.
When the hemoglobin loses its oxygen, it changes to what color?
[ "bluish red", "purple red", "light pink", "grayish red" ]
bluish red
Answer the following multiple-choice question. Question: When the hemoglobin loses its oxygen, it changes to what color? Options: A. bluish red B. purple red C. light pink D. grayish red Which option is correct and why?
The correct answer is: bluish red.
How are weather patterns formed?
[ "uneven heating of the atmosphere", "the moon's gravitational pull", "carbon dioxide", "pollution from planes" ]
uneven heating of the atmosphere
Answer the following multiple-choice question. Question: How are weather patterns formed? Options: A. uneven heating of the atmosphere B. the moon's gravitational pull C. carbon dioxide D. pollution from planes Which option is correct and why?
The correct answer is: uneven heating of the atmosphere.
Boyle discovered that what property of a gas is inversely proportional to its volume?
[ "amount", "temperature", "mass", "pressure" ]
pressure
Answer the following multiple-choice question. Question: Boyle discovered that what property of a gas is inversely proportional to its volume? Options: A. amount B. temperature C. mass D. pressure Which option is correct and why?
The correct answer is: pressure.
What amazing machines smash particles that are smaller than atoms into each other head-on?
[ "absorption accelerators", "nitrogen accelerators", "observant accelerators", "particle accelerators" ]
particle accelerators
Answer the following multiple-choice question. Question: What amazing machines smash particles that are smaller than atoms into each other head-on? Options: A. absorption accelerators B. nitrogen accelerators C. observant accelerators D. particle accelerators Which option is correct and why?
The correct answer is: particle accelerators.
The interaction of what opposite factors describe a biome and ecosystem?
[ "hygroscopic and abiotic", "abiotic and biotic", "innate and biotic", "metastasis and biotic" ]
abiotic and biotic
Answer the following multiple-choice question. Question: The interaction of what opposite factors describe a biome and ecosystem? Options: A. hygroscopic and abiotic B. abiotic and biotic C. innate and biotic D. metastasis and biotic Which option is correct and why?
The correct answer is: abiotic and biotic.
What is caused by differences in density at the top and bottom of the ocean?
[ "deep currents", "still water", "flat currents", "shallow currents" ]
deep currents
Answer the following multiple-choice question. Question: What is caused by differences in density at the top and bottom of the ocean? Options: A. deep currents B. still water C. flat currents D. shallow currents Which option is correct and why?
The correct answer is: deep currents.
What is the layer of tissue between the body and shell called?
[ "cuticle", "mantle", "epidermis", "collagen" ]
mantle
Answer the following multiple-choice question. Question: What is the layer of tissue between the body and shell called? Options: A. cuticle B. mantle C. epidermis D. collagen Which option is correct and why?
The correct answer is: mantle.
Well suited to absorb water and dissolved minerals from the soil, thin-walled dermal cells and tiny hairs cover what basic plant structures?
[ "roots", "flowers", "leaves", "stems" ]
roots
Answer the following multiple-choice question. Question: Well suited to absorb water and dissolved minerals from the soil, thin-walled dermal cells and tiny hairs cover what basic plant structures? Options: A. roots B. flowers C. leaves D. stems Which option is correct and why?
The correct answer is: roots.
What is the major artery of the body, taking oxygenated blood to the organs and muscles of the body?
[ "capillary", "diastolic", "carotid", "aorta" ]
aorta
Answer the following multiple-choice question. Question: What is the major artery of the body, taking oxygenated blood to the organs and muscles of the body? Options: A. capillary B. diastolic C. carotid D. aorta Which option is correct and why?
The correct answer is: aorta.
What do you call a growing mass of cancerous cells that pushes into nearby tissues?
[ "pallet", "tumor", "calcium", "bacteria" ]
tumor
Answer the following multiple-choice question. Question: What do you call a growing mass of cancerous cells that pushes into nearby tissues? Options: A. pallet B. tumor C. calcium D. bacteria Which option is correct and why?
The correct answer is: tumor.
What is the major intracellular cation?
[ "glucose", "magnesium", "sodium", "potassium" ]
potassium
Answer the following multiple-choice question. Question: What is the major intracellular cation? Options: A. glucose B. magnesium C. sodium D. potassium Which option is correct and why?
The correct answer is: potassium.
The enzyme pepsin plays an important role in the digestion of proteins by breaking down intact protein to what short-chain amino acids?
[ "peptides", "proteins", "protons", "lipids" ]
peptides
Answer the following multiple-choice question. Question: The enzyme pepsin plays an important role in the digestion of proteins by breaking down intact protein to what short-chain amino acids? Options: A. peptides B. proteins C. protons D. lipids Which option is correct and why?
The correct answer is: peptides.
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.
Terrestrial ecosystems, also known for their diversity, are grouped into large categories called what?
[ "bisomes", "biomes", "monomes", "substrates" ]
biomes
Answer the following multiple-choice question. Question: Terrestrial ecosystems, also known for their diversity, are grouped into large categories called what? Options: A. bisomes B. biomes C. monomes D. substrates Which option is correct and why?
The correct answer is: biomes.
High explosives create shock waves that exceed the speed of sound, a phenomenon that goes by what term?
[ "ion speed", "supersonic", "light speed", "turbulence" ]
supersonic
Answer the following multiple-choice question. Question: High explosives create shock waves that exceed the speed of sound, a phenomenon that goes by what term? Options: A. ion speed B. supersonic C. light speed D. turbulence Which option is correct and why?
The correct answer is: supersonic.
What do you call a structure composed of two or more types of tissues that work together to do a specific task?
[ "cell", "system", "organ", "marrow" ]
organ
Answer the following multiple-choice question. Question: What do you call a structure composed of two or more types of tissues that work together to do a specific task? Options: A. cell B. system C. organ D. marrow Which option is correct and why?
The correct answer is: organ.