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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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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

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Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
The upper intake manifold, often called a plenum, attaches to the lower intake manifold. The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
A square matrix P is called a permutation matrix if each row and column of P contains exactly ... A square matrix P is called a permutation matrix if each row and column of P contains exactly ...
A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin A lesion called a plaque in the brain of an individual with Alzheimer disease. A ring of degeneratin
A debt payment of $7500 is due in 24 months. If money is worth 7.2% p.a. compounded quarterly, ... A debt payment of $7500 is due in 24 months. If money is worth 7.2% p.a. compounded quarterly, ...
Video: Energy Flow - Trophic Levels and Food

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