Polar Bears :: essays research papers

frosty BearsLife Span It is sired that polar bears move an average of 15 to 18 years, though some bears convey mark in their early 30s. In some zoos bears have been known to live up to the mid 30s. There is only iodine individual bear that has been known to have lived up to the age of 40.Biologists believe that starvation is the leading cause of death for sub adult bears, which is in all likelihood the reason that when bears argon 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 there is an estimated figure of 22,000 to 25,000 bears, of which 60% of bears ar living in Canada. HabitatIt all begins in late autumn. The presently summer is over, and it gets colder every day as the sun slowly disappears a pregnant polar bears starts looking for place to give wear to its cubs. She walks more or less until she finds a deep snowdrift. There she s tarts digging her winter den. The female polar bear uses her claws as shovels to move away 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 bottom of the tunnel, she makes a small core out. When she is holy digging, she lies down to rest. The drifting snow will close the entrance of the cave and the thick snow will protect her the harsh Artic nights. Then more or less Christmas or New Years she will give birth to her cubs. These bears remain in their habitat for about 6 months, by because the cubs are ready to slowly come to play. The m separate will short start looking for food and will rove the area as the new bears follow. RangeA polar bears foundation grade can be enormous, much bigger than any other species of bears. It is believed that a single polar bear can rove crossways an area as twice as big as the farming of Iceland. An Alaskan polar bear was found a home range 45 times the size of Tennessee. F oodThe diet of polar bears is walruses, seal, and heavyweight carcasses. Ringed seal is their main food. Polar bears are true carnivores, which fuddled that they feed mainly of meat. Sometimes these bears walk around for days and weeks without determination any food.