Organisms use different types of adaptations to aid in their survival. Many different types of animals hibernate throughout the winter. During hibernation, the animal's metabolism slows and its core temperature lowers. What is this process called?

Torpor is a state in which an animal’s metabolic rate and body temperature drop, helping it conserve energy when conditions are unfavorable. Hibernation involves long periods of torpor, so the best answer is “torpor.” Sleep does not normally involve this same strong reduction in metabolism and core temperature.

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