How does gaseous exchange occur in lungs ?

Where does gaseous exchange take place in lungs ?

Site of gaseous exchange in lungs is

Gaseous exchange occur in birds inside

Gaseous exchange occur in birds inside

Gaseous exchange occur in birds inside

Give suitable explanations for the following: Why does gaseous exchange continue in the lungs even during expiration ?

Site of gaseous exchange in lungs is :

How does gaseous exchange take place in the alveoli?

"_____________" are the sites of gaseous exchange in lungs.

In plants gaseous exchange occurs through ?