How Do Polar Bears Stay Warm?

By: Guest
Date: Unknown--
Response
1
they stay worm with thier thick fur

Polar bears are superbly insulated by their 10 cm (3.9 in) of blubber,[33] their hide and their fur; they overheat at temperatures above 10 C (50 F), and are nearly invisible under infrared photography.[37] Polar bear fur consists of a layer of dense underfur and an outer layer of guard hairs, which appear white to tan but are actually transparent.[33] The guard hair is 515 cm (2.05.9 in) over most of the body.[38] Polar bears gradually moult from May to August,[39] but, unlike other Arctic mammals, they do not shed their coat for a darker shade to camouflage themselves in the summer conditions. The hollow guard hairs of a polar bear coat were once thought to act as fiber-optic tubes to conduct light to its black skin, where it could be absorbed; however, this theory was disproved by recent studies

[d] By: Guest
Date: Tue-May-12-2009
Response
1
They need to stay dry and fluffy to maintain their body heat
[d] By: Guest
Date: Tue-May-12-2009
Response
What is 1 + 100

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