About how much of Earth's surface is covered by ocean water?

Which process on the early Earth first released most of the water that would eventually make the oceans?

Where does the salt in salty ocean water come from?

What is the number one factor that determines the type of organisms that can live in a body of water?

The earth's oceans contain about _______ percent salt.

How much salt is in freshwater?

Where on Earth is ocean water the most dense?

How does salinity affect ocean water density?

What type of water is most available for human use as drinking water?

How does ocean water temperature affect its movements?

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