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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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Germination of grass seeds involves mobilization of stored reserves
Furchgott's discovery that endothelial cells produce a vasodilating substance.
Why leaves are green: interaction of light with chloroplasts.