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The human body produces and destroys 15 million blood cells every second.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.