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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Your heart beats over 36 million times a year.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).