Earth

A clear sky contains very few what?

More Questions from Earth
Which of the following types of trees does not have lobed leaves?
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In weather, "mean" means what?
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What is the largest natural carbon sink on earth?
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What is water treated with to prevent bacteria from growing?
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What kind of calendar traditionally predicts the weather?
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What piece of material attracts iron and some other metals?
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What mineral makes both sapphires and rubies when cut and polished?
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Which unit measures atmospheric pressure?
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