The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Water striders serve as a model organism for the study of sexual conflict between males and females.