Science
About how often does Halley's Comet return?
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The physicist Marie Curie was awarded the Nobel Prize in which year?
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Which characteristics do organisms use to help them survive in their environment?
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Marie Curie spent much time studying which of these subjects?
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What galaxy is closest in light years to the Milky Way Galaxy?
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Which Apollo mission was launched on December 21, 1968, and spent Christmas in lunar orbit?
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The leading edge of an advancing cold air mass is known as what?
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Which inhospitable desert holds the world's richest deposits of dinosaur remains?
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What famous scientist introduced the concept of "space-time"?
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