1. **冬眠定义**:冬眠是动物为适应严寒和食物短缺而降低新陈代谢、进入低耗能状态的生理现象。 2. **熊的冬眠特点**:熊的冬眠属于“浅冬眠”(轻睡眠),其体温下降幅度较小(4-5℃),仍可被外界刺激唤醒。 3. **物种差异**: - 黑熊、棕熊:明确冬眠,持续时间因气候和食物条件而异(通常3-7个月)。
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...
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 ...
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. ...
Why Do Bears Hibernate? by Darice Bailer (Tell Me Why, Tell Me How series) (eBook)Bailer, Darice
However,bears don’t truly hibernate. Instead, we go into an extended ultra-slow metabolic state called “torpor.” During our winter torpor, we keep our bodies around 86°F rather than getting into the much lower ranges common in true hibernators, which can drop their internal temps as low...
Answer: Beavers build dams to protect themselves from predators, such as bears or wolves. Beavers don’t actually live in the dams, but in the deep pond of water that dams create. In this pool, beavers construct their real home: a small protective island or dome ‘lodge’ that serves as...
百度试题 结果1 题目 (C)4.- How long do the bears hibernate(冬眠)?-The bears hibernate for about ___ months A. four B. five C. four or five D. five or six 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Today, many types of mammals are recognized as hibernators, including bats, rodents, bears and even primates — three species of dwarf lemur in Madagascar and the pygmy slow loris in Vietnam have been found to hibernate. Hibernating groundhogs even inspired the annual U.S. celebration of Groun...
In which season do animals like bears often hibernate? A. Spring B. Summer C. Autumn D. Winter 相关知识点: 试题来源: 解析 D。解析:在冬季,一些动物如熊会冬眠,因为冬季食物短缺,通过冬眠来度过寒冷且食物匮乏的时期。春季动物苏醒,夏季动物活跃地觅食等,秋季动物为冬眠做准备。