Earth

What is the hardest mineral known on Earth called?

More Questions from Earth
What is a worldwide increase in temperature called?
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How long does it take earth to revolve around the sun?
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The coldest recorded temperature on Earth, -128 degrees F., was taken where?
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Which of the following types of trees does not have lobed leaves?
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How was the 12-mile limit of a country's boundary set?
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Who first charted the Gulf Stream?
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Which of these habitats describes the North Pole?
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From what perspective does a map shows what the earth looks like?
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