Question

breathing and
exchange of gases​

Answer 1

Answer:

Gas Exchange Between Alveolar Spaces and Capillaries

The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them.

Answer 2

We breadth oxygen O2 with air

whereas we exhales CO2 with air.

Here the exchange of gasses occurs between oxygen and carbon dioxide (carbon).

hope it helps...