The post Google Celebrates Teachers Day with Google Doodle

Hibernation is critical to a groundhog’s existence, saidKenneth Armitage, a population biologist and professor emeritus at the University of Kansas. It allows marmots to live in extreme environments, places where food disappears for several months of the year. Hibernation dictates when marmots can reproduce, whether they’re social and how they act when they’re not hibernating.. […]

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