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The human body produces and destroys 15 million blood cells every second.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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There are approximately 3 million unintended pregnancies in the United States each year.
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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.