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Did you know?
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
There are more bacteria in your mouth than there are people in the world.