Which Was the Primary Challenge Animals Faced in Adapting to Life

question 17

Multiple Choice

Which was the primary challenge animals faced in adapting to life on land?

• A) The presence of new predators
• B) Being able to adapt to move on land
• C) The need for more oxygen to do work
• D) Finding a mate in the new environment
• E) The desiccating effect of the atmosphere

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Definitions:

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The study of how psychological processes, the nervous system, and the immune system interact with each other.

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A biological system consisting of specific cells and proteins that defend the body against infection, disease, and foreign substances.

Stress

A physical, mental, or emotional factor that causes bodily or mental tension and may be a factor in disease causation; a state of mental or emotional strain resulting from adverse or demanding circumstances.