The only way to prevent people from contracting both curable and incurable STIs that is effective 100 percent of the time is with . The risk of contracting hepatitis is lowered when a person receives . are protective barriers used to reduce the risk of contracting an STI.

Matching: 1. first used by europeans as a local anesthetic; now abused for its euphoric effects 5 marijuana 2. found in coffee beans, tea leaves, and cocoa beans 2 heroin 3. prescribed for pain involving serious injury or surgery 1 morphine 4. illegal derivative of morphine that is sold on the street as a white powder 6 caffeine 5. can evoke feelings of terror and panic 4 lsd 6. causes user to experience a conscious dreamlike state 3 cocaine