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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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Everyone has one nostril that is larger than the other.