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The Earth's form is almost totally round. The force of gravity would pull the earth into an ideal sphere shape, but because to the Earth's fast rotating on its axis, a hypothetical line running from North Pole to the South Pole, the equator is less affected by gravity. Every 24 hours, the world spins swiftly, and therefore the surface at the equator moves so quickly that gravity has little influence here. The terrain at the equator bulges outward by roughly 13 miles (21 kilometres) thanks to the reduced gravity, whereas the bottom at the poles seems flattened. The geoid, or real, somewhat compressed shape of the world , is that the results of this.
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