1. A person using marijuana is more likely to use other "harder" drugs. True

80% of adult smokers started smoking before the age of 18. So that means that almost all smokers started smoking when they were teens. (CDC, 1999)

2. Most adults who smoke started smoking after age 18. False

The truth is nearly 90% of all adult smokers start when they're teens - and never intend to get hooked. Almost every adult who smokes wishes they'd never started.

3. When you smoke a cigarette or chew tobacco, you are ingesting which of the following harmful chemicals into your body: All of the above

In addition to the addictive drug nicotine, you'll find these dangerous chemicals - as well as many more - in cigarettes and smokeless tobacco. Yuck!

4. How many Americans over 12 drink alcohol?   65%

5. Does Marijuana Affect School, Sports, or Other Activities? Yes

It can. Marijuana affects memory, judgment and perception. The drug can make you mess up in school, in sports or clubs, or with your friends. If you're high on marijuana, you are more likely to make stupid mistakes that could embarrass or even hurt you.

If you use marijuana a lot, you could start to lose interest in how you look and how you're getting along at school or work.

Athletes could find their performance is off; timing, movements, and coordination are all affected by THC. Also, since marijuana use can affect thinking and judgment, users can forget to have safe sex and possibly expose themselves to HIV, the virus that causes AIDS.