Polar Bears :: essays research papers

frosty Bears life Span It is believed that frozen give ins live an average of 15 to 18 years, though few bears take a crap tagged in their early 30s. In some zoos bears have been known to live up to the middle 30s. There is only one individual bear that has been known to have lived up to the age of 40.Biologists believe that starvation is the leading cause of final stage for sub adult bears, which is probably the reason that when bears are in captivity (a zoo) they live longer.PopulationPolar bears live in Russia, Alaska, and Canada to Greenland. There is no exact number of a population estimate, but biologists believe at that consecrate is an estimated figure of 22,000 to 25,000 bears, of which 60% of bears are living in Canada. HabitatIt either begins in late autumn. The short summer is over, and it gets colder every day as the sun slowly disappears a pregnant polar bears starts looking for place to give birth to its cubs. She straitss around until she finds a deep sno wdrift. There she starts jab her winter den. The female polar bear uses her claws as shovels to move absent the snow this can take a few hours and even up to a couple of days. These dens are thirty to fifty feet long. At the foot of the tunnel, she makes a small cave. When she is finished digging, she lies down to rest. The drifting snow testament close the entrance of the cave and the thick snow will protect her the harsh Artic nights. Then around Christmas or New Years she will give birth to her cubs. These bears remain in their habitat for some 6 months, by then the cubs are ready to slowly answer to play. The mother will soon start looking for food and will rove the area as the new bears follow. RangeA polar bears home range can be enormous, overmuch bigger than any other species of bears. It is believed that a single polar bear can rove across an area as twice as big as the country of Iceland. An Alaskan polar bear was instal a home range 45 times the size of Tennessee . forageThe diet of polar bears is walruses, seal, and whale carcasses. Ringed seal is their main food. Polar bears are true carnivores, which mean that they feed mainly of meat. Sometimes these bears walk around for days and weeks without finding any food.