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Author Question: Two nutrients that can best boost the immune system are: a. vitamins A and B12. b. vitamin C and ... (Read 26 times) |
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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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.