Science
Which of these was one of the original universal elements?
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What tool do people at sea use to measure distance with echoes?
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What would you call a statement of expected future occurrences?
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What is the sticky bacteria that forms on teeth and gums?
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When a dog repeats a learned behavior and gets a reward, what process is shown?
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Which planet was discovered in 1781 with the help of Bode's Law?
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What is the female reproductive cell of flowering plants?
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