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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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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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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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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The horizontal fraction bar was introduced by the Arabs.