What factors – physical, historical, and otherwise – have contributed to the traditional identification of multiple “oceans” versus the concept of a single, global ocean?

According to this theory, the ocean formed from the escape of water vapor and other gases from the molten rocks of the Earth to the atmosphere surrounding the cooling planet. After the Earth's surface had cooled to a temperature below the boiling point of water, rain began to fall—and continued to fall for centuries.

Explanation:

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