Health

3. smokers Non-smokers who breathe secondhand smoke.
7. Smoke Air that has been contaminated by tobacco smoke.
8. A disease that destroys alveoli.
9. monoxide A colorless, odorless, poisonous gas produced when tobacco burns.
11. dependence An addiction in which the body develops a chemical need for a drug.
12. Fragile, elastic, small air sacs in the lungs where carbon dioxide from body cells and fresh oxygen from air are exchanged.
13. Smoke A smoke that comes from the burning end of a cigarette, pipe, or cigar.
16. SystemThe set of organs that supply your body with oxygen and rid your body of carbon dioxide.
18. Smoke The smoke that a smoker inhales and then exhales.

1. A psychological or physical need for a drug, or other substance.
2. dependence An addiction in which a person believes that he or she needs a drug in order to feel good or function normally.
4. The body's need for larger and larger doses of a drug to produce the same effect
5. Large dome shaped muscle below the lungs that expands and relaxes to produce breathing.
6. A thick dark liquid that forms when tobacco burns.
10. An addictive drug found in tobacco.
14. Tube in the throat that takes air to and from the lungs.
15. Two tubes that branch from the trachea, one tube leads to each lung.
17. The unpleasant symptoms that someone experiences when he or she stop using and addictive substance.