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Did you know?
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.