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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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
The Excretory System Water and waste products from cells