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How were the seas and oceans formed?

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Video: Theories About How Oceans Were Formed Today, more than 2/3 of Earth is covered with water, mostly in our oceans. But Earth itself is much older than our oceans. read more

Seas are partially or completely enclosed parts of the ocean. 1 - By volcanic islands blocking part of the ocean 2 - Embryonic development of a future. read more

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