Which of the following statements is correct concerning endothermy? (1) Mammals and birds evolved endothermy. (2) All vertebrates are endothermic. (3) Endothermy is regulating body temperature from the inside using metabolic or other physical changes. (4) Endothermy is regulating body temperature from the outside through behavioral changes.

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Which of the following statements is correct concerning endothermy? (1) Mammals and birds evolved endothermy. (2) All vertebrates are endothermic. (3) Endothermy is regulating body temperature from the inside using metabolic or other physical changes. (4) Endothermy is regulating body temperature from the outside through behavioral changes.






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