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Earth
How old is the earth?
Earth
How old is the earth?
5 million years
4.5 billion years
1 billion years
40 billion years
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What word means a mild or moderate temperature?
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What layer in the atmosphere is responsible for filtering out solar radiation?
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What is the weather phenomenon known as a "tsunami"?
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Where would you take cover from a tornado?
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Which of these islands is not considered a "hot spot", according to plate tectonic theory?
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What did ancient farmers probably use to tell the passing of seasons?
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What is sedimentary rock composed primarily of sand-sized grains?
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How old do scientists think the Earth is?
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