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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.