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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
Furchgott's discovery that endothelial cells produce a vasodilating substance.
A chuckwalla, Sauromalus ater. Chuckwallas are large herbivorous lizards living in the southwestern
Countries with the Greatest Oil Reserves
Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many
Share of Human Capital in Wages in Advanced Countries
Self-crossing F2 plants to produce an F3 generation shows that there are two different genotypes amo