Earth
What is the hardest mineral known on Earth called?
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What igneous formation is usually seen in the core of folded mountains?
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If you are going to Florida Bay from the everglades which direction would you travel?
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Which of these islands is not considered a "hot spot", according to plate tectonic theory?
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Which of these is the Greek name for the east wind?
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What type of energy sources can't be replaced readily within a 30-year span?
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What is the name for huge waves that are often caused by an underwater earthquake?
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Which of these types of energy is cleanest and causes the least pollution?
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