Answer:
It allows them to save energy
Explanation:
Hibernation is a behavioral adaptation that involves physiological changes to survive during wither months. These physiological changes can include a decrease in body temperature, respiratory/heart rate and metabolism. The main purpose for which animals enter hibernation is to conserve energy, thereby surviving adverse climatic conditions and/or periods when food is scarce. Some examples of true hibernators (i.e., animals that enter into a state of minimal activity) include bats, hedgehogs, allies, squirrels, marmots, etc.
The answer is probably air.
Hydro means water. which means the adding of water; it is digestion. it is the opposite process of dehydration synthesis which is removing water. synthesis hear means small to large so opposite processes. :)
In developed nations people have more fast food options which lead to cardiovascular disease. As well as screen time all day since this is one of the factors of cardiovascular disease. Undeveloped nations don't have fast-food or television to watch all day, since they play outside.
(D) It uses enzymes to liquefy food and kill bacteria to be further digested in the intestines.
