The process by which creatures regulate body temperature from the outside through behavioral changes is known as what?

• Correct Answer: ectothermy
• misiothermy
• endothermy
• exterior induction

Explanation: Until mammals and birds evolved, all vertebrates were ectothermic. Ectothermy means regulating body temperature from the outside through behavioral changes. For example, an ectotherm might stay under a rock in the shade in order to keep cool on a hot, sunny day. Almost all living fish, amphibians, and reptiles are ectothermic. Their metabolic rate and level of activity depend mainly on the outside temperature. They can raise or lower their own temperature only slightly through behavior alone.

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