Science
Where is the observatory where Percival Lowell first theorized the existence of Pluto?
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Who is regarded as the man who invented the telephone?
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In what year did Albert Einstein win the Nobel Prize for physics?
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Where are the male sperm cells formed in flowering plants?
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Which one of these colors is NOT part of the primary colors of light?
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Who discovered that a moving magnet generates electric current known as electromagnetic induction?
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Which of these is a virus that doesn't immediately cause damage to tissue?
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