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Practice Reading: Fill in the Blanks (Dropdown)
ID: #33981
Hibernation
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Hibernation is a for many creatures - from butterflies to bats - to survive cold, dark winters without having to forage for food or migrate to somewhere warmer. , they turn down their metabolisms to save energy. Animals in hot climates also undergo a form of hibernation called aestivation. This works in a similar way and enables them to survive extreme heat, drought, or lack of food.
Hibernating is much more than simply sleeping, though. Depending on the species, it can vary from long, deep unconsciousness to light spells of inactivity. But hibernation carries risks as the dormant animal is to predators and the unpredictable climate.
Hibernating is much more than simply sleeping, though. Depending on the species, it can vary from long, deep unconsciousness to light spells of inactivity. But hibernation carries risks as the dormant animal is to predators and the unpredictable climate.
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