 3. Nest and childbirth changes In recent years, the area of Arctic sea ice continuing decrease, and thick polar ice is also gradually disappear, floating ice become increasingly unstable, unable to find a place to give birth and breeding the babies. And the disappearing of sea ice would trapped polar bears in the center of sea, and can not return to the land, to build their own nest. According to World Wide Fund for Nature, the number of polar bear populations are reducing, the number of polar bear population groups are only 19 remaining. |
Polar Animals 1. Lack of food Because of the ice melting, polar bear hardly to find food. Polar bear live with the floating ice, where the seals live, it mainly eat seals. Due to the less floating ice, polar bears cannot catch seals near surface, so they hardly to find enough food. 2. Hibernation time decrease The hibernation stored fat is related to the fate of the little polar bear. As icing period delay, polar bears will not be able to get their vital fat stores. This will affect the polar bear breeding and propagate. Because lack of food and storage fat, polar bear's fertility rate fell by 15%.  |
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