Science
What force slows down a rolling ball?
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What is the female reproductive cell of flowering plants?
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What type of cell doesn't have membrane around its nuclear material?
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What type of simple machine is used on a flag and flag pole?
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The Hubble Space Telescope was deployed on which Space Shuttle in 1990?
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What spacecraft takes astronauts into space, orbits the Earth and can be flown more than once?
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The definition of "process of removing salts from water using a membrane" best fits which science term?
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