Definitions
The Arctic has numerous definitions, including the region north of the Arctic Circle currently (Epoch 2010 at 66°33'44" N), or the region north of 60° north latitude, or the region from the North Pole south to the timberline.
The Antarctic is usually defined as south of 60° south latitude, or the continent of Antarctica. The 1959 Antarctic Treaty uses the former definition.
The two polar regions are distinguished from the other two climatic and biomatic belts of Earth, a tropics belt near the equator, and two middle latitude regions sandwiched between the tropics and polar regions.
Read more about this topic: Polar Region
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