Homework help polar bear

Polar bear

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Homework help polar bear



How are animals living in the polar region adapted to the conditions in which they live in? A polar bear lives in the cold, snowy Arctic lands.

They are the largest land carnivores. Why are polar bears white? Their white fur helps them blend in with the snow and ice. How does a polar bear keep warm? A polar bear has a layer of fat under its skin which helps it stay warm. It also has a thick layer of fur.

Why does a polar bear have very wide, large paws? The wide, large paws help a polar bear to walk in the snow. Why does a polar bear have nostrils which it can close? When a polar bear swims under water it closes it nostrils so no water can get in. Polar Bears. Follow me on Twitter mbarrow. I teach computers at The Granville School and St. John's Primary School in Sevenoaks Kent. Animal Adaptations and Survival by Mandy Barrow.

You may not redistribute, sell or place the content of this page on any other website or blog without written permission from the author Mandy Barrow. Homework Index. Desert Tortoise. Fennec Fox. Saguaro Cactus. Arctic Conditions How are animals living in the polar region adapted to the conditions in which they live in? Animals of the Arctic have many adaptations to help them survive in often inhospitable climate. Polar Bears A polar bear lives in the cold, snowy Arctic lands.

How has a polar bear adapted to its Arctic environment? Polar bears are adapted to suit a cold environment. If a polar bear was adapted to live in a desert: What colour would the polar bear be so it was camouflage? Would it still have thick fir? What would it eat?

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Polar bears are overwhelmingly carnivorous, feeding especially on the ringed seal but also on other seals as well as walruses and sea lions. As their prey is aquatic, polar bears are excellent swimmers, and they are even known to kill beluga whales. The polar bear is unique among four-legged animals in its swimming technique, since it uses only its front limbs to move through the water.

Polar bears are also opportunistic eaters, meaning that they will consume anything available, including dead fish and stranded whales as well as garbage found near human settlements. Mating occurs in spring, with a delay in the implantation of the fertilized egg. Including the delay, gestation the period between conception and birth may last — days. One to four cubs—but usually two—are born during the winter in a den of ice or snow.

Cubs are not weaned until after they are two years old. Young polar bears may die of starvation or may be killed by adult males, and for this reason female polar bears are extremely defensive of their young when adult males are present. Young polar bears remain with their mothers until they reach sexual maturity. Females first reproduce at four to eight years of age and breed every two to four years thereafter. Males mature at about the same age as females but do not breed until a few years later.

Adult polar bears have no natural predators, though walruses and wolves can kill them. Longevity in the wild is 25 to 30 years, but in captivity several polar bears have lived to be more than 35 years old.

Humans probably cause most polar bear deaths by hunting and by destruction of nuisance animals near settlements. Polar bears have been known to kill people. Polar bears are hunted especially by the Inuit people for their hides, tendons, fat, and flesh. At the beginning of the 21st century, an estimated 20, to 25, polar bears existed in the wild.

Because of continued global warming , however, some scientists predict that Arctic sea ice will decline drastically by the middle of the 21st century. With the decrease in ice, polar bears will have less area in which to hunt and to mate. The U. Geological Survey suggests that habitat loss may cause polar bear populations to decline by two-thirds by the year In the U.

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