A. are hibernators B. have a low body temperature C. have a sufficient reserve of fat D. have a slow process of warming up 相关知识点: 试题来源: 解析 C 正确答案:C 解析:“Bears,relying on fat reserves to keep them going,even produce their young during this period.”由此可知C项是符...
If a hibernator'stemperature falls too low, it will awaken slightly and tremble to warm up a bit. The largest hibernators are the bears. Although a bear's heart rate may drop from a normal of 40-50 beats per minute down to 8-12,its temperature drops only slightly,allowing it to wake...
参考: blog.cvsd.k12.pa.us/blogaroo/2010/11/08/12/ Stardust It is a mon misconception that bears hibernate during the winter. While bears tend to slow down during the winter they are not true hibernators. Black bears Grizzly bears and Brown bears do go into a deep sleep du...
Unlike bears,hibernators(冬眠动物) are animals that sleep all winter long.They don't eat at all.Before winter,these animals,such as,frogs,dormice(睡鼠),eat and eat to get fat.In winter days,they sleep all day and all night.Their hearts beat very slowly and their te...
This makes a lot of sense, as animals that hide away in a cave or a tree hole are protected by their physical shelters from a variable environment outside, while hibernators enjoy a flexible metabolism (新陈代谢) that can help them adapt to a changing climate.According to the passage, ...
Because dwarf lemurs are a closer genetic match to humans than other hibernators, such as bears and bats, researchers say studying their torpor may help humans safely enter and emerge from similar suspended states during surgery. Credit: Lydia Greene ...
This is the year! That's that phrase that we hear every single year as Minnesota Vikings fans. Yet, every year Vikings fans are disappointed, and then the next year starts that whole hope thing all over again. Last year was exciting. Vikings seemed to pull out a win so many times when...
In 1872, the U.S. government signed the Yellowstone National Park Act into law and created what the National Park Service (NPS) refers to as "the world's first true national park." Today, there are thousands of national parks throughout the world, and four of them — Rocky Mountain, Me...
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In 1872, the U.S. government signed the Yellowstone National Park Act into law and created what the National Park Service (NPS) refers to as "the world's first true national park." Today, there are thousands of national parks throughout the world, and four of them — Rocky Mountain, Me...