Earth

What is the hardest mineral known on Earth called?

More Questions from Earth
What's the name for the weight of air pushing down on Earth's surface?
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What kind of calendar traditionally predicts the weather?
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What is another name for continental glaciers?
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Which of these is another name for dirt?
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What soft brown coal that has lost all of its moisture called?
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What event can cause much damage from the shaking of the Earth's crust?
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What is the length, in miles, of the San Andreas Fault?
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What term describes the overflowing of rivers or streams?
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