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17.2 Vocab.
Chapter 17 Vocab.
Term | Definition |
---|---|
tar | a dark sticky substance that forms when tobacco burns |
carbon monoxide | a colorless odorless gas |
nicotine | increases the activity of the nervous system |
addiction | physical dependence |
chronic bronchitis | clogging of mucus |
emphysema | a serious disease that destroys lung tissue & can cause breathing difficulties |