Oceans

What surface rock comprises the majority of the Earth's crust in the area beneath the oceans?

More Questions from Oceans
At what depth may you need to go to see a frilled shark in the ocean?
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In the 1970's, a large and failed expansion to Florida's Osborne Reef was comprised mostly of what?
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Hector's dolphin is the world's smallest dolphin and also the what?
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Which U.S. State is located closest to the Atlantic Ocean?
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Which of these is not an ocean?
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Coral reef means what as it relates to the environment?
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What does ocean ranching mean?
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As much as 80% of marine debris comes from what source?
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