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The human body produces and destroys 15 million blood cells every second.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
The horizontal fraction bar was introduced by the Arabs.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
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