Earth
What mineral makes both sapphires and rubies when cut and polished?
More Questions from Earth
What is water that flows over the ground rather than seeping into it called?
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What is the term used to classify igneous rocks that are light in both color and gravity?
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What is the term for the Earth's crust where it underlies oceans?
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What is the system consisting of the Earth's sun and the eight planets orbiting it called?
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What are the fastest and strongest global winds called?
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What scientist purposed the theory of continental drift?
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