Earth is rotating about its axis since 5 billion years, when earth was still molten and some giant object hit it tangentially. Due to the centrifugal force produced by rotation, the earth got bulged at the equators.
It has retained its shape till now, when the crust formation has taken place so we see it flattened from the poles(or bulged at the equator, whichever way you say that). And it is likely to remain so, because earth is still rotating about its axis.
I hope it answered the question.
It has retained its shape till now, when the crust formation has taken place so we see it flattened from the poles(or bulged at the equator, whichever way you say that). And it is likely to remain so, because earth is still rotating about its axis.
I hope it answered the question.
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