Science
What electronic device only allows current to flow in one direction?
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Which of these things should you do during a thunderstorm?
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What is a process used by plants to convert light energy into chemical energy?
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What is the study of stars, planets and galaxies called?
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How long, in kilometers, is the average single thread unwound from a silkworm cocoon?
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Awarded the Nobel Prize in 1977, John H. Van Vleck's area of expertise is in what?
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Who is responsible for the Lost Continent of Atlantis theory?
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