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.
Did you know?
The average adult has about 21 square feet of skin.
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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Malpighian tubules from the excretory system of an insect.
Lymphatic system.
Organs of the digestive system.
Example of a Regulatory System
Organ System
The two circuits of the human cardiovascular system
