Oceans
About how many million tons of salt are obtained from the ocean each year?
More Questions from Oceans
What is the distance over water in which waves are generated by a wind having a rather constant direction and speed?
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Hector's dolphin is the world's smallest dolphin and also the what?
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The Irrawaddy dolphin is similar to which whale in appearance?
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What percentage of the earths surface is covered by oceans?
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The Bering Strait is named for what Danish-born explorer?
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