Oceans

What percentage of our oxygen supply is generated in the ocean?

More Questions from Oceans
What valuable metal is found in the oceans but is expensive to extract?
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What ocean is off the west coast of the United States?
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What is the land area that is closest to the ocean generally called?
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Which of the following fish is most shaped like a torpedo?
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Who was the manufacturer of the World's first outboard engine?
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What gas that you breathe, necessary for life, is also dissolved in ocean water?
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What percentage of Earth's volcanic activity occurs on the ocean floor?
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What ocean did Ferdinand Magellan name?
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