Chapter 20 - 22 vocab Crossword
               
               
               
               
               
               
               
               
               
               
               
 
 
Down: 1) a cancer-causing substance3)  the addictive drug found in tobacco leaves 5) a thick, sticky, dark fluid produced when tobacco burns Across: 2) a drug that increases the action of the central nervous system, the heart, and other organs 4) a substance that causes physiological or psychological dependence 6) a colorless. Peerless, and poisonous gas, is another compound found in cigarettes
 

 

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