When polar bears breathe, their lungs fill with a mixture of gases including oxygen. The polar bear's body separates out most of the gases which are not oxygen and expels them. The oxygen is then transported into the bloodstream by small vessels in the lungs.
normal oxygen
AnswerThey breathe oxygen, like we do.
Polar Bears don't live in the Artic because they need land to survive. They swim in the Artic ocean but they don't live in it. Anyways Polar Bears can't live without oxygen from the air.
Polar bears do not live in the rainforest but they do depend upon it for the oxygen it produces.
polar bears are related to bears.
Polar bears do.
They reproduce.
POLAR BEARS Polar bears actually grow pretty fast.
Polar bears are mammals.
Polar bears are bears
humans are polar bears
A sleuth or a sloth of bears