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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.