Question

Describe the structures that make gas exchange between the lungs and blood possible. How does their shape (structure) help carry out their job (function)?

Answer 1

I have no idea what the hell is your teacher teaching you I feel bad for you!!!!

Step-by-step explanation:

Answer 2

Alveoli are tiny balloon-shaped structures. ... This is the term used to describe the tree-like structure of passageways that brings air into the lungs. The walls of the alveoli are very thin. This lets oxygen and CO2 pass easily between the alveoli and capillaries, which are very small blood vessels