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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.