Question

____ is defined as a chronic lung disease caused by cigarette smoking and is characterized by difficulty in breathing and shortness of breath.

Answer 1

Lung cancer because once you smoke, the toxic chemicals build up in each lung sack causing it to build up over a period of time and can have breathing difficulties and can lead up to cancer

Step-by-step explanation:

Answer 2

Lung cancer because once you smoke, the toxic chemicals build up in each lung sack causing it to build up over a period of time and can have breathing difficulties and can lead up to cancer