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There are more bacteria in your mouth than there are people in the world.
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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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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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Illicit drug use costs the United States approximately $181 billion every year.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.