Earth

If an organic material is converted into stone, it becomes what?

More Questions from Earth
What is the place where an air mass forms called?
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A 286-mph tornado ripped through what U.S. state?
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About 100 lightning bolts strike the earth how often?
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How many continents does Earth have?
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What famous volcano erupted in 1980 after many years of dormancy?
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The Earth's atmosphere lies just above what part of its composition?
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Which of these rivers flows north?
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What activity allows humans to go underwater with oxygen tanks and a wetsuit?
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