Polar Regions
Antarctica
Antarctica, the coldest and second-smallest continent (after Australia), is centered on the South Pole and is situated almost entirely within the Antarctic Circle at 66 1/2&#x...
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Polar Axis and Tilt
The polar axis is an imaginary line that extends through the north and south geographic poles. Earth rotates on its axis as it revolves around the Sun. Earth's axis is tilte...
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Polar Regions
Polar Axis and Tilt