The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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The horizontal fraction bar was introduced by the Arabs.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
