Ques:Q: What term describes a drug that has an effect on the central nervous system? Choices: - nonaddictive drug - elemental drug - steroidal drug - psychoactive drug A:

Ans:psychoactive drug
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Ques:Q: What distinguishing characteristic of annelid anatomy shows specialization and adaptation? Choices: - asymmetry - beautiful - compression - segmentation A:

Ans:segmentation
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Ques:Q: Large increases in the diversity of life have resulted from adaptive radiations that followed what? Choices: - mass mutations - mass migrations - glaciers - mass extinctions A:

Ans:mass extinctions
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Ques:Q: Overpopulation takes place when the number of organisms in an area exceeds what? Choices: - consumers - predators - biome size - carrying capacity A:

Ans:
carrying capacity
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