Question

why are lungs divided into small sack like structures. ​

Answer 1

Explanation:

Lungs are divided into sacs to increase the surface area and to easily transport oxygen to the blood vessels which surrounds the air sacs and also air sacs have a thin film of oxygen which helps to absorb oxygen quickly.

Answer 2

Answer:

hello dear!!

hope my answer helps

Explanation:

Lungs are divided into sacs to increase the surface area and to easily transport oxygen to the blood vessels which surrounds the air sacs and also air sacs have a thin film of oxygen which helps to absorb oxygen quickly