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Author Question: Ambient air contains what percentage of oxygen? A) 100 percent B) 50 percent C) 21 percent D) 10 ... (Read 58 times) |
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.