Polar Bears Kerrie, Krystal, and Kyle

~*~How it Evolved~*~ As the polar bear evolved, its appearance became different from its brown bear ancestors Hair soon covered the whole body except for its nose and the pads of its feet The coat became white to blend in with the snow

How its suited to live in the Environment The farther north an animal is found, the smaller its extremities, because of the need to conserve energy The polar bear became a true Arctic marine mammal because it now depends entirely on the sea for its existence

Polar Bears learn and adapt very quickly They often stop to think before acting and are healthily inquisitive Polar bears can survive in harsh, changing environment.

Face (Nose) Polar bear has a much more keener sense of smell. They also have better eyesight. Brown bears have a dished face and Polar bears have a Roman Profile face.

The Paws Polar bears have bigger paws in order to swim. Function like snow shoes to spread out weight and keep from breaking the ice. Brown Bear Polar Bear

Fur Polar bears have warm, thick fur for swimming in the harshly cold water. The white bear has thicker fur than a brown bear has.

Teeth The polar bears teeth (canines) are more sharper and larger to tear through seals.

When the seasonal and annual ice is unpredictable, they tend to have a larger home range in order to ensure that they have enough ice within this range. The decrease in ice cover affects the seal population which is the polar bears’ main food source. Polar bears adapt to this change by learning to scavenge for seal remains. Adapting to Decrease in Ice Coverage

How cubs are suited to arctic life The mother polar bear has very rich milk which provides the cub with the energy that is necessary for life in a cold, harsh environment

ar.jpg _3.png Bear-cubs.png ar_Bear_snow_2004.jpg Picture Websites

Stirling, Ian. "The First Polar Bears." Poalr Bears Jan Science Online. Facts On File News Services. 16 Jan "Polar Bear Evolution." Polar Bears International Jan "Determinants of Home Range Size for Polar Bears." Wiley InterScience John Wiley &Sons Inc. 16 Jan < abstract?CRETRY=1&SRETRY=0> Works Cited