polar bears :: essays research papers

Polar Bear, common name for a blank bear found on the sea ice of the Arctic passim the North Polar basin. The only marine bear, it is longer than other bears and silken for aquatic life. It has the plantigrade feet (heel and sole touching the ground) typical of bears, with five sharp, curve claws on each foot for grasping the ice and holding its prey. dogged hair between the pads protects the bears feet from the cold and provides traction on the ice. Stiff hairs on the forelegs, and very broad front feet, help the bear swim. All frozen bears atomic number 18 white, although their fur may yellow in the summer.The largest wild bears always weighedmore than 800 kg (1760 lb)have been paired bears. However, most male polar bears weigh an average of nearly 350 kg (about 880 lb), and most females weigh about 250 kg (550 lb). Polar bears have a strong navigational sense, an exceedingly good sense of smell, and they are unusually clever at resolving problems in order to obtain foo d. They eat primarily ringed seals, and now and then bearded seals, walruses, or white whales. They also feed on berries, sedges, mussels, and kelp.As with other true bears, polar-bear mothers and young form strong bonds. The young are very small when born about 1 kg (about 2 lb). Their eyes remain closed for about 40 days and they essential nurse every few hours. The mother holds them close to keep them warm. tho during the breeding season, male polar bears are solitary and roam all over vast expanses of sea ice while hunting. During the breeding season (May to June), the males employment furiously over females.