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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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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.

An 1891 cartoon blames immigrants for the ills of American society: anarchy, socialism, mayhem, and An 1891 cartoon blames immigrants for the ills of American society: anarchy, socialism, mayhem, and
A Human Element Emerges A Human Element Emerges
The five skills of the element Collection of Information The five skills of the element Collection of Information
The five skills of the element Analysis of Situation The five skills of the element Analysis of Situation
Which of the following reactions correctly shows the transmutation of an element by neutron ... Which of the following reactions correctly shows the transmutation of an element by neutron ...
He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ... He element M forms the chloride MCl4 containing 75.0% Cl by mass. What is the atomic weight of ...
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