Science

Earthmen first sent a spacecraft to which planet?

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What is the watering of land by artificial means called?
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Which scientist disproved the Spontaneous Generation Theory?
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Which of these is a famous astronomer for whom a comet was named?
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Which unit can we use to measure a magnetic field?
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What word is the definition of 100,000 BTUs?
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What is the closest value of pi?
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Where is the asteroid belt found?
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How fast does light travel in one second?
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