What caused the earth to become round in shape?
Gravity pulls the matter at equal force.
Gravity pulled all material to make all surfaces equal in distance from the center, so a sphere is the easiest condition to meet.
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The main cause of Earth's round shape is its rotation, which produces centrifugal forces that cause the equator to bulge and uniformly apply gravitational forces that shape the planet into a roughly spherical form.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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