Science
What scientist discovered that sunspots occur in an eleven-year cycle?
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What are plants that grow, flower, make seeds and die in one year?
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What distinction does Mira (Omicron Ceti) hold in astronomy?
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What is the term for the capacity of a body or system to do work?
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What is the name for a body in orbit around the Sun?
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Which of the following energy sources do gardens rely on most for survival?
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What is the name of the spacecraft that took the first men to the moon?
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What is a long balloon filled with helium generally called?
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What fuels were formed from the decayed remains of plants and animals?
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