Question

What is hibernation? ​

Answer 1

Hibernation is when an animal slows its heart rate to save energy and survive the winter without eating much.During hibernation the animal's body temperature drops, and its heartbeat and its breathing slow down so that it does not use much energy.

or in long answer..

Hibernation is a way animals conserve energy to survive adverse weather conditions or lack of food. It involves physiological changes such as a drop in body temperature and slowed metabolism. Research into the processes involved in hibernation could result in medical benefits for people.

Answer 2

Answer:

An inactive state resembling deep sleep in which certain animals living in cold climates pass the winter. In hibernation, the body temperature is lowered and breathing and heart rates slow down. Hibernation protects the animal from cold and reduces the need for food during the season when food is scarce. squirrels groundhog etc. do hibernation