Lung cancer is most often caused by exposure to tobacco smoke, and smoke Tobacco smoke , whether directly or passively inhaled, has been shown to worsen asthma. Given these facts, what can be caused by direct or passive inhalation among the following options:
- skin grafts
 - prolonged thirst
 - science
 - Toxicity
 - lung cancer
 - negative
 - friction
 - craters


 

     lung cancer    