This is necessary because it is the high levels of glucose in the frogs'cells that keep them alive during the long,cold winter.28. What's special about wood frogs that just begin hibernation? A. They freeze completely soon. B. They keep freezing and thawing. C. They don't eat anything...
Very few animals can survive freezing, " the teacher said. "Even you cannot survive being frozen.But the wood frog can. Now scientists are studying this kind of frog. T hey are studying how it freezes over the winter. They are studying how it thaws when the weather becomes warm. T hey...
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Often, frogs will burrow below the frost line to wait out the cold winter months and to keep from freezing solid. Sometimes, they mistake filter media or bio-cubes left in the bio-falls or skimmer as a safe and easy place to bury themselves for winter hibernation. Unfortunately, that may...
Nevertheless, given the massive biochemical and physiological disturbances accompanying tissue freezing, the recovery dynamics in these frogs seem sufficiently rapid to minimize most ecological risks and to permit early spring breeding. The faster recovery of locomotion in R. sylvatica compared with P. ...
(每小题2分,共20分)(A)Wood frogs live in cold places in North America. They can live there by freezing themselves! Do you want to know more about them? Just read on.Here's a wood frog. Let's find out how it freezes itself. When the temperature falls below 10℃, its skin will...
Wood frogs have a broaddistribution over North America.They can live there by freezingthemselves! Do you want to knowmore about them? Just read on.Here's a wood frog. Let's find out how it freezesitself. When the temperature falls below 0 ℃, its skinwill freeze in 10 minutes. Itc he...
Wood frogs spend the winter in a remarkable state: frozen, yet still alive. Once they thaw in spring, they head for ponds to find breeding partners.
but they're still alive in a state of suspended animation. The frogs survive because theirliversproduce glucose that prevents their cells from freezing. They begin to thaw out inspring, and at some point — though scientists aren't sure how — their hearts start beating again and they go on...
their body temperature is equal to the temperature around them because, like insects and snakes, they can’t control it themselves. They prefer warmth, and they certainly don’t want to freeze to death. So, prior to winter weather they bulk up with fat and hibernate below the freezing line...