The following drug produces the least physical damage to humans: A)alcohol B)cocaine C)heroin D)Nicotine
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E) LSD
A new BC pill has a pregnancy rate of 0.3 per 100 woman years. This means: A) every sexually active woman taking it has a 3% chance of getting pregnant B) for every 1000 women taking the pill for a year, 3 become pregnant C)
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