Science
What protects our Earth from harmful rays?
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What is matter that allows light to pass through called?
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Which substance will have the highest increase in temperature for the same amount of heat?
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At which angle should a cannon be aimed to maximize distance?
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Which of the following books has Carl Sagan not authored?
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What type of circulatory system pumps blood into cavities instead of through vessels?
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What tool uses a magnetic needle that points north?
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Which Apollo mission were Edward White and Gus Grissom selected for?
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