Earth is the third planet of the solar system according to distance from the Sun. It has an atmosphere to support life due to its suitable size and distance from the sun. Size of this planet is not a perfect sphere but a little flattened on both ends or the poles and thus a bulge is made slightly around the centre or the equator. You can compare Earth’s shape to that of an orange This type of shape refers is usually called ‘ablate spheroid’ or ‘geoid’ meaning earth-shaped.

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