Question

which of the following substance in tobacco smoke affects the gas exchange system​

Answer 1

Answer-

Over time, the toxins from inhaled cigarette smoke break the thin walls of alveoli, leaving larger, less efficient air sacs. The sacs also begin to lose their bounce, making it harder to bring in the oxygen and expel carbon dioxide. 3 Both can become partially trapped in the lungs.

Please mark my answer as brainlist