The polar bear (Ursus maritimus) is a large bear which lives in the Arctic. It has black skin under the white fur. They are strong and fast, and can run
In mathematics, the polar coordinate system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from a reference
Polar climate has temperatures below 0 °C (32 °F) for much of the year. According to the Köppen climate classification, a polar climate is one in which