Should you become entangled under water: A. Do not struggle in an effort to free yourself.
B. If you cannot easily untangle yourself, have your buddy do it for you.
C. Do not use a knife or cutting tool on the entanglement.
D. Both the first and second answers are correct.

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