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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.