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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.