Science
Which of these scientific terms is defined as the solid surface layer of a planet or moon?
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Where on the moon did people first land a spacecraft?
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What does one call a smaller stream that parallels a larger stream and finally enters the larger stream?
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What university did astronomy and space science theorist Carl Sagan teach at?
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Who was the first woman to win the Iditarod sled dog race?
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What scientist first showed that a changing electric field produces a magnetic field?
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