Question

Smoking is the leading cause of lung cancer in the United States.

Answer 1

Answer:

its a topic

Explanation:

Smoking. Smoking tobacco is by far the leading cause of lung cancer. About 80% of lung cancer deaths are caused by smoking, and many others are caused by exposure to secondhand smoke. Smoking is clearly the strongest risk factor for lung cancer, but it often interacts with other factors.Oct 1, 2019