Science
About how often does Halley's Comet return?
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What makes up about 70 percent of most living things?
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Who was the first woman to win the Iditarod sled dog race?
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What inherited syndrome is believed to be part of the make up of many serial killers?
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When we add two forces, what do we call the answer?
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Which of these scientific terms is defined as the solid surface layer of a planet or moon?
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Diabetes develops as the result of a problem with which specific organ in the body?
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