Evaporative cooling is used only as a last resort by animals in hot and dry environments because
A) it is ineffective at dissipating heat.
B) sweating or panting dissipates heat but can cause excessive water loss.
C) sweating requires a significant expenditure of energy.
D) it requires an insulating layer in the skin.
E) it requires a resetting of the animal's thermostat.

Question

Quizplus · Accepted Answer

Evaporative cooling, which involves sweating or panting, can help animals dissipate heat, but it also causes water loss. In hot and dry environments, water is scarce, so animals may avoid using evaporative cooling unless it is necessary to avoid overheating.

Evaporative Cooling Is Used Only as a Last Resort by Animals