Polar bear(书籍音频+Word)-Extraordinary Animals 新课标三级（7-9年级）

EXTRAORDINARY ANIMALS Athletes Polar bear Ear Polar bears live along the coast about 1,000km from the North Pole. Their fur is actually transparent – it's the light that makes it appear white. The polar bear is perfectly camouflaged for the purposes of hunting. It has fur on the soles of its feet to insulate them from the ice. It also has black, heat-absorbing skin. Thanks to a thick layer of fat, it can retain its body heat on land and in the water. Nose Its nose can sniff out a seal 32km away. A polar bear may go up to 4 months without eating! Neck Polar bear To be able to survive in extreme conditions, some animals have evolved in extraordinary ways. Find out about them here. 学科网（北京）股份有限公司 $$null