Everyday Science
Who was the first to measure the earth’s circumference?
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Average earth-sun distance _________?
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Cloud direction instrument?
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Microscope lens _________
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Bats are —–animals:
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The percentage of blood cells in human blood is _________?
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The major ingredient of leather is__________________?
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X-rays were discovered by__________?
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Pendulum time period on Moon would?
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