| A | B |
|---|
| Nicotine | An addictive drug found in tobacco |
| Bronchi | Two tubes that branch from the trachea one tube leads to each lung |
| Tar | A thick dark liquid that forms when tobacco burns |
| Carbon Monoxide | A colorless odorless poisonous gas produced when tobacco burns |
| The unpleasant symptoms thast someone experiences when he or she stops using an addictive substance | Withdrawal |
| Air that has been contaminated by another person's cigarette | second hand smoke |
| Smoke that comes from the burning end of a cigarette, pipe or cigar | Side Stream Smoke |
| The smoke that a smoker inhales and then exhales | Mainstream Smoke |
| Are nonsmokers who breathe secondhand smoke | Passive Smoke |
| Is an addiction in which a person believes that he or she needs a drug in order to feel good or function normally | Phychological dependance |
| An addiction in which the body developes a chemical need for a drug | Physical Dependence |
| The body's need for larger and larger doses of a drug to produce the same effect | Tolerance |
| A psychological or physical need for a drug or other substance. | addiction |
