Question

2. What is hibernation?​

Answer 1

Hibernation is when an animal slows its heart rate to save energy and survive the winter without eating much. Some animals just slow down and move less frequently during hibernation, but others go into a deep sleep and don't wake up till spring.

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Answer 2

Answer:

hibernation is the winter sleep. They are taken so as to avoid the harsh temperature. It is a dormant phase where the metabolic rate is lowered. For example, Polar bears hibernate and crocodiles aestivate.