Science
During the seventeen hundreds, what creature was thought to excrete blood through its skin?
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What is the repeated sound when sound waves bounce off other objects called?
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What is caused when the Moon moves into the Earth's shadow?
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What specifically is a bezoar called those results from persimmon ingestion?
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What is it called when the Earth, Sun and Moon lie in a straight-line configuration?
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Which of these is a unit of length used in marine navigation?
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Marie Curie spent much time studying which of these subjects?
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What was so unusual about the Mercury space flights?
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The Sun's mass is approximately how many times as great as Earth's?
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