Ques:Q: Common among mammals and insects, pheromones are often related to what type of behavior? Choices: - aggressive - immune - cardiac - reproductive A:

Ans:reproductive
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Ques:Q: What has hot days and cool nights, and are typically covered with sand dunes or sparse but hardy plants? Choices: - rain forest - tundra - arctic - deserts A:

Ans:deserts
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Ques:Q: Virtually all of the effects of pregnancy can be attributed in some way to the influence of what? Choices: - proteins - enzymes - acids - hormones A:

Ans:hormones
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Ques:Q: When do female reproductive organs mature? Choices: - at menopause - at birth - periomenopause - at puberty A:

Ans:
at puberty
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