Oceans
What do ship captains use to help them know when it is safe to dock at the ocean's edge?
More Questions from Oceans
A low-oxygen area of the ocean is often referred to as what?
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The decrease of oxygen in water is referred to as what?
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The world's largest artificial reef, the U.S.S. Oriskany, can be found in what ocean?
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What surface rock comprises the majority of the Earth's crust in the area beneath the oceans?
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How long did it take Columbus to cross the Atlantic?
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A large collection of islands in the ocean is called what of these?
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