New Science eTextbook 4A (UPC)

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2 How do animals adapt to cold environments? 1. Observe the pictures. What characteristics do these polar animals have? Circle the correct answers. fur of polar bear

The Fur that Helps Keep Warm Unlike the fur of other mammals, the fur of polar bears is tube-shaped. This can trap more air for insulation and keep polar bears warm, helping them adapt to the very cold climate.

1

the centre is tube-shaped

structure of polar bear’s fur

polar bear

fat under walruses’ skin

outer layer of skin

2

fat under skin

walrus

thick / thin fur thin / thick layers of fat under the skin

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