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Marijuana Marijuana is a mixture of leaves and the flowering tops of the Indian hemp plant Cannabis Sativa, smoked or eaten for its hallucinogenic and pleasure-giving effects. The psychoactive ingredient of marijuana, tetrahydrocannabinol (THC), is concentrated in the flowering tops of the hemp plant; hashish, a drug prepared from the plant resin, has about eight times more THC than marijuana. Hemp grows throughout temperate regions, with the more potent varieties produced in dry, hot, upland …

…marijuana..." Most people think of marijuana users as dreamers with the attention spand of a gnat and no memory worth the name. Wrong. This picture emerging from psychology labs in that there is at most a kernel of truth in this stereotype, while some studies find no evidence of even subtle mental impairment in heavy users. And even those that do are open to a range of interpretations--not necessarily worrying to marijuana users. ------------------------------------------------------------------------ **Bibliography**