Question

4.
How are the lungs designed in human beings to maximise the area for
exchange of gases?​

Answer 1

Explanation:

The alveoli provide a surface where the exchange of gases can take place. ... The walls of the alveoli are supplied with an extensive network of blood vessels. So lungs maximise the area for gaseous exchange through the presence of large number of alveoli which are richly supplied with blood.

MARK AS BRAINLIEST

Answer 2

Answer:

here is yr ANSWER mate.......