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The horizontal fraction bar was introduced by the Arabs.
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Your heart beats over 36 million times a year.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.