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...
In fact, bears can wake upand move around their dens(兽穴) during hibernation. That's especially true if they sense danger.Why do bears hibernate? Like all living things, their bodies burn energy. They get more energy byeating. _3_ Hibernation is a way for bears and other animals to ...
Why Do Bears Hibernate? by Darice Bailer (Tell Me Why, Tell Me How series) (eBook)Bailer, Darice
stronger than humans. We know we wouldn'twant to end up on a bear's bedside!What happens if you wake a bear from hibernation(冬眠)? 2 A bear that senses a threat can wakequickly to defend itself. That's because bears' body temperatures only lower by a few degrees when theyhibernate....
Some bears hibernate in hollowed-out tree trunks. Some take a months-long rest beneath thick brambles and brush. Others dig into the hills to forge snug dens. And still others discover caves to hide away from the biting winter chill. But wherever a bear chooses to hibernate, the objective ...
Just as bears hibernate in the winter when resources are scarce, perhaps people sleep at night to reduce their energy expenditures. While this is an intuitive explanation of sleep, there is little research that supports this explanation. In fact, it has been suggested that there is no reason ...
As most of us learned early in school, bears, as well as several other animal species, undergo this long-term, sleep-like phase to escape from the bitter cold during winter months. And can we blame them? After all, winter can't be fun when there's little food and bitterly ...
given in the passage.Why should you keep exercising even when cold temperatures make you want to hide under the covers? With the temperatures dropping at this time of year, many of us tend to hibernate (冬眠) inside our homes. But, hibernating is for bears. As humans it’s important to...
Grizzly bears hibernate. Their behaviors are closely synchronized with the seasons. 灰熊会冬眠。它们的行为与季节变化紧密地保持一致。 During the summer, they have to pack on enough body fat to survive the winter. 在夏季,它们必须储存足够的身体脂肪,以度过冬天。 Without it, they would either starve...
Although ice crystals form under the skin when frogs hibernate in the winter, a high concentration ofglucose occurring naturally in the frog's organs prevents the animal from freezing. Even when a deep freeze causes the frog's heart to stop beating and the frog to stop breathing, the body ...