1. Marijuana
The hemp plant Cannabis sativa, commonly known as marijuana, is a very popular drug in the United States for its unique effects. ... The concentration of THC is located in the flowering top of the plant. The flowering tops can be processed to make a potent resin called hashish in most of the world, or charas in India. ... The THC content of the normal plant can be from 0.5% to 6%. ... Where the plant is grown also has an effect on the potency. ...
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- Grade Level: High School