Bear hibernation is part of a bear's annual cycle of activity, when its metabolic systems change and activity pauses for a period of time varying with the habitat's climate. Grizzly bears hibernate for 5–7 months each year. But it isn't as clear-cut as curling up and going to sleep ...
Bears hibernate throughout winter months. Bears do not eat, drink or defecate when they hibernate but that doesn’t mean they are in complete repose. Actually, bears are not true hibernators, they enter a torpid state which is slightly different from true hibernation. In true hibernation, like...
A common definition of hibernation is a long-term state in which body temperature is significantly decreased, metabolism slows drastically and the animal enters a comalike condition that takes some time to recover from. By this definition, bears don't hibernate, because their body temperature drops...
People could be changing how bears sleep, and not in a good wayLindsay Dodgson
故选C。 4.B 细节 题。 第五段前 句Some other animals sleep for a long time in winter. They are in hibernation.和该段末句 Bears, snakes and frogs are such animals.可判断, 熊和蛇属 于冬眠动物。 故选B。 反馈 收藏
They are safe and warm in their homes in winter.Some other animals sleep for a long time in winter. They are in hibernation(冬眠). They eat much food in autumn. In winter they eat nothing. They're very hungry when they wake up in spring.They usually look for food in March or April...
Today, it's not a question if polar bears are endangered. It's just a matter of how long. But even more, polar bears aren't the only ones in danger. Their prey is also being wiped out by global warming -- putting polar bears at greater risk of starving. The World Wildlife Fund an...
Bears hibernate through the winter. They take a long sleep. This helps them live through the cold months. They don't have to worry about finding food. Some animals do the same thing in the summer. They have a summe...
Some other animals sleep for a long time in winter. They are in hibernation(冬眠). They eat much food in autumn. In winter they eat nothing. They’re very hungry when they wake up in spring. They usually look for food in March or April. Bears, snakes and frogs are such animals. ...
_20Winter is cold in northern countries. Some animals are smart. They can spend winter safely. A. Many birds migrate in autumn. B. Bears and snakes are such animals. C. Some animals eat a lot of food in spring. D. Many animals make changes in their bodies. E. Some animals begin ...