The purpose of my article is to prove that marijuana affects teenagers and their minds. Marijuana is a tobacco-like substance produced by drying the leaves, stems and flowering tops of the Cannabis sativa (Indian hemp) plant (Fact Sheet 1). It is smoked or eaten to hallucinate and receive pleasure. It grows just about anywhere. It is illegal in some countries but in others it is used for medical purposes (Encarta, 1). Some names for it to be called joint, nail, pot, Mary Jane, beehive, etc. (Fact Sheet and Facts for Teens, 1). Marijuana stays in the body for several days after a smoking session. In a chronic user, marijuana can remain in the body for several weeks (Facts for Teens, 1). About one in five 12th graders and about one in four high school students have used marijuana in the past month (Facts for Teens, 1). 1). It is the second most popular drug among adolescents in the United States (Encarta, 1). Adolescents aged 12 to 17 who use marijuana weekly are nine times more likely than non-users to use illegal drugs and alcohol (Fed. Study, 1). More and more young people aged 13 and 14 are using drugs, fifteen people...