What is lung cancer most often caused by?
the Moon Pollution sunlight Chemical energy fossil fuels cigarettes burning marijuana smoke
A B C D E F G H
Tobacco is smoked in pipes or in cigarettes or bidis.
Lung cancer is most often caused by cigarettes
What is lung cancer most often caused by? (A) the Moon (B) Pollution (C) sunlight (D) Chemical energy (E) fossil fuels (F) cigarettes (G) burning (H) marijuana smoke