Earth

What is the hardest mineral known on Earth called?

More Questions from Earth
What kind of calendar traditionally predicts the weather?
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Snow particles that have blown into a pile are said to form what?
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What famed rock is 1396 feet high, 2.75 miles long, and .25 miles wide?
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What kind of waves does an earthquake produce?
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What is the tendency of Earth's rotation to turn winds called?
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In weather terms, what turns to water in a "spring thaw"?
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What water movement is similar to a jet stream in the air?
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What is water treated with to prevent bacteria from growing?
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