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)。 - 北极熊:雄
My Favourite Animal My favourite animal is the frog. Frogs are amphibians, living both in water and on land. They are known for their jumping ability and unique croaking sound. Unlike bears, frogs don't hibernate in winter. Instead, they spend the cold months in water, breathing through the...
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...
Why Do Bears Hibernate? by Darice Bailer (Tell Me Why, Tell Me How series) (eBook)Bailer, Darice
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
Some animals hibernate during the winter, while others migrate to warmer areas. However, not all birds leave home. So, what aboutducks? What do ducks do in the winter? Where do they go? As the temperature drops, you may notice that ducks begin to move in large groups. We have all see...
Do reptiles hibernate? Tegus, lizards native to Brazil, can spend up to six months underground during the cool, dry winters. (Image credit: Florida Fish and Wildlife Conservation Commission) What about reptiles, which are pretty cold in general? Are their periods of seasonal dormancy comparable ...
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。
根据Unlike many other animals bears do not actually hibernate(冬眠). Although the bear does not eat during the winter months its temperature remains almost normal and it breathes regularly four or five times per minute. 美国黑熊的冬眠方式很特别。选A。 考点:科普类文章 解析 暂无解析 扫码下载...