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The horizontal fraction bar was introduced by the Arabs.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Cyanide works by making the human body unable to use oxygen.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.