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The average adult has about 21 square feet of skin.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
The human body produces and destroys 15 million blood cells every second.
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