Quote: Animals, such as bears, bats, frogs and turtles sleep all winter because they cannot find food. then When they are asleep, their body temperature drops, and their heartbeat and breathing slow down.
ItHibernating animals use very little energy. These animals eat a lot before winter comes and grow fat. They live all winter on the fat stored in their bodies. When spring comes, they awake (wake or awaken) because they feel warm and are hungry.
Other animals, such as the snakes, hibernate to escape the cold weather. When the temperature is low, these animals slow down and can hardly move at all. If they stayed outside, they would freeze, so they spend the winter hibernating in a protected place.
Heres something interesting:
Hibernating animals USE very little energy. Plural of animals singular of use.
A hibernating animal USES very little food. Singular of animal plural(?) of use.
In addition, "An" is often used in front of a word beginning with H. I think this is very proper British. This usage appears to be in decline.
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Additional information:
During hot summers and periods of drought they
(some frogs) "estivate"?-the word means "to pass the summer." Many reptiles estivate. Among the more accomplished are some water-storing frogs of the more arid regions of Australia and North America. The reservoir frog lives and breeds in pools which fill up in the rainy season. When the sun empties the pools, the frog goes down several feet into the mud, and after distending itself with water, shapes out a little moist cell whose walls later become dry, hard, and insulating. There the frog, in a torpor that is profound though not as deep as that of hibernation, calmly sits it out until the next rainy season.
http://www.saudiaramcoworld.com/issue/196209/creatures.of.the.dry.world.htm