Science
What is the substance that gives plants their green color?
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What are the loosely packed cells just inside the upper epidermis called?
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At which angle should a cannon be aimed to maximize distance?
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Which inhospitable desert holds the world's richest deposits of dinosaur remains?
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Which branch of science did young Carl Sagan tell his grandfather he wanted to practice?
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What is caused when the Moon moves into the Earth's shadow?
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What inherited syndrome is believed to be part of the make up of many serial killers?
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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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