Science
Who discovered the supernova and was the first to theorize that stars "die"?
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Where on the moon did people first land a spacecraft?
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How often does sunspot activity reach its lowest point?
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Which inhospitable desert holds the world's richest deposits of dinosaur remains?
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What is a collection of different types of tissue to perform a specific function?
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Halley's Comet is predicted to appear again in which year?
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Which of the following energy sources do gardens rely on most for survival?
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Which term describes flying at six times the speed of sound?
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What term describes what happens when ice breaks off a main glacier and becomes an iceberg?
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