A Deep Sleep

November 2011
Weekly Reader - Edition 2;Nov2011, Vol. 81, Special section p2
The article offers information on hibernation of groundhogs. Hibernation is a state in which animals fell into deep sleep during winter when food is scarce. A groundhog prepares for hibernation in the fall by first eating plenty of plants to store fat. It will then dig a den where it will stay for the winter. Its body temperature declines and its breathing slows during hibernation. The groundhog wakes up when the weather becomes warmer and then it will relocate to its summer den.


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