Earth
What is the test that can help determine the hardness of a rock called?
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If an organic material is converted into stone, it becomes what?
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What periods of the Earth's history had glaciers covering a lot of the Earth?
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The Appalachian Mountains are best described as what type of mountains?
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What name is used specifically to describe the region around the South Pole?
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Which of the following describes a period of abnormally dry weather for a specific area?
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