Polar Bears Research Paper

Most of the bears live in the poles including the polar bears, the main species of my paper. Most of north lands are covered by ice and snow which restraints behavior of animals at some extent. Also, the white color of the polar bears can be helpful to hide from predator. The polar bears (Ursus maritimus) eat mainly ringed and bearded seals located on the border of the Canadian arctic. Those seals are killed by polar bears during breathing holes depending on the availability of seals in the ecological niche (Stirling and Archibald 1977). However, arctic foxes and polar bears compete for the adults’ seals and the competition for food increase between them. It is not clear whether the polar bears feed with seals or are hunt by arctic foxes. If seals are not available, polar bears feed …show more content…
The decline of sea ice level will lead to a deterioration of body shape of polar bears. Canada is the best place to admire the polar bear in their environment. Living in the cold is not easy, polar bears develop thick layers that facilitate the walk on the snow. Also, they are too big to live in snowpack or in subnivean environment. In the summer, sea ice melt with the increasing of heat and the high albedo of snow. It becomes difficult for polar bears to hunt seals because the ice is crack all over the place. The polar bears have to find an isolate place where they can feed before the winter arrives. In the winter times, there are cold temperatures and snow become to form. Those conditions are ideal for hunting as it becomes easy for polar bears to move on the snow with their thick layers. Contrary to polar bears, grizzly bears do not live in the poles. We can found grizzly bear in boreal forest and rocky mountain (Fest-Bianchet and Kansas 2010). In order to choose an environment to live, grizzly bears have to make sure it is safe and there is plenty food. Their