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The horizontal fraction bar was introduced by the Arabs.
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Your heart beats over 36 million times a year.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
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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.