Cancer begins when the cells of the body grow how ?

Which food can a vegan eat? a. lasagna with cheese b. vegetable risotto c. poached eggs on toast d. chocolate milkshake e. stir-fried chicken

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

What is the most likely reason the professional group binds its members to follow these rules?