The harmful effects of tobacco use are mainly caused by what substances?
       
      
                
     
    
    
    
    
    2 answers:
            
              
              
                
                
Nicotine tar carbon dioxide
                                
             
                    
              
              
                
                
The first one, i know this because sadly i smoke and ive took a health class. there is no alcohol, carbon monoxide and alveoli  
HOPE THIS HELPED :) plz give briliantist answer :)
                                
             
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