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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
The horizontal fraction bar was introduced by the Arabs.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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