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antiseptic1488 [7]
3 years ago
15

Which trait enables a polar bear to survive an extremely cold climate

Biology
1 answer:
irinina [24]3 years ago
3 0

Answer: Their thick layers of fur, and high percentage of body fat

Explanations:

Organisms typically have specialized traits, which enable their survival in certain harsh climates. Polar bears are distinctive for their white fur, and fatty layers.

  • Their fur, which allows them to camouflage in snowy white tundras and swaths of sea ice, is actually made up of two layers; these are soft, shorter dense hairs, along with guard hairs which are longer and thicker. These trap warm air, keeping the bears warm and insulated.
  • Thick layers of body fat called blubber, insulate the bears against gusty cold winds and icy water; temperatures at the arctic average well below freezing. Additionally, the fat keeps them buoyant as they swim, apart from acting as a food store (fat stores energy) when their food source becomes more scarce.

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