Why would exothermic organisms need more efficient respiratory systems than endothermic organisms?

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Quizplus · Accepted Answer

Exothermic organisms, such as reptiles and amphibians, rely on their environment to regulate their body temperature. This means they are more active and require more energy when their surroundings are warmer. This increased activity results in a higher demand for oxygen to fuel aerobic respiration, making a more efficient respiratory system necessary. Endothermic organisms, on the other hand, can regulate their own body temperature and have a more consistent demand for oxygen, making a less efficient respiratory system sufficient.

Why Would Exothermic Organisms Need More Efficient Respiratory Systems Than