1. Their potential abuse.
2. Drugs are a psychoactive substance.
3. A psychoactive substance is something that people take to change the way they feel, think or behave.
4. I know man-made and naturally occurring drugs.
5. Naturally occurring drugs are coca paste, opium and marijuana.
6. Synthetic drugs include ecstasy, LSD.
7. People use drugs just to escape the reality, to have fun.