Question

The mincroscopic air-scas of the lungs_________​

Answer 1

Answer:

Alveoli

Explanation:

hope it helps!!

Answer 2

Explanation:

alveoli are the microscopic air sacs present in the lungs

and each time one smokes cigarette, these air sacs are destroyed hence affecting the gas exchange

there are hundred millions of alveoli present in our Lungs