A polar circle is either the Arctic Circle or the Antarctic Circle.
Both of these zones are called polar regions.
Those are the "polar" regions.
The region between the Arctic Circle and the North Pole is called the Arctic region. The region between the Antarctic Circle and the South Pole is called the Antarctic region.
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The Arctic circle.
The area (land and sea) enclosed by the Arctic Circle is known as the North Polar Region.North Polar RegionThe Arctic
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The Arctic Circle
When they are circumscribed by an Arctic Circle.
Polar bears live only in the northern polar regions - which includes the Arctic and Arctic Circle regions. They do not live in the Antarctic.
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The parallel of latitude that circumscribes the polar tundra zone is the Arctic Circle in the northern hemisphere and the Antarctic Circle in the southern hemisphere. These circles mark the boundary where the tundra biome transitions into the polar ice caps.