Earth

What are the three main categories of rock?

More Questions from Earth
What does your body use to get rid of salt?
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What is not an example of a halide?
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What is the name of any body of igneous rock named for the Roman god of the underworld?
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Which rock would test positive to an acid test?
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What instrument measures water vapor in the atmosphere?
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Where is the coldest place on earth?
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When is Earth day every year?
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Which body part is also a name for the center of a hurricane?
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