Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Georges Braque, Violin and Palette.
Strings of frog eggs
In the reaction C(s) + O2(g) CO2(g) carbon is __________.