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Tobacco
| Term | Definition |
|---|---|
| Nicotine | An addictive, or habit-forming, drug found in tobacco |
| Tar | A thick, dark liquid that forms when tobacco burns |
| Carbon monoxide | A colorless, odorless, poisonous gas produced when tobacco burns |
| Alveoli | The tiny air sacs in the lungs |
| Emphysema | A disease that result in the destruction of the alveoli in the lungs |