Earth
What theory proposes that Earth's landmasses were once connected and drifted apart?
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If an organic material is converted into stone, it becomes what?
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What is petroleum as found in the earth, before it is refined?
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What kind of scientist would study rocks, minerals and mountains?
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What is the highest mountain, considering just the contiguous United States?
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What branch of science deals with fossils of living things?
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What percentage of rock-forming minerals are silicates?
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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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