Science
What do our bodies need from the air we breathe?
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What would you use to measure the mass difference between two like objects?
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Marie Curie spent much time studying which of these subjects?
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The definition of "a physical unit of storage on a computer disk or tape" best fits which science term?
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When cool or cold air suddenly drops to the ground, it is known as a what?
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John Glenn was the first American to orbit the earth, in how long a flight?
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