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Did you know?
More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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There are more bacteria in your mouth than there are people in the world.