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Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
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There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.