Identify the two gases exchanged between the body and
the air during respiration. Explain how this gas exchange
happens.

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

The human body is designed to exchange gases with the external environment or atmosphere. The external environment consists of numerous gases and oxygen being a vital gas is an essential part of the body.

Million of alveoli in the lungs work to make it happen. Hence these gases are CO2 and O2.

Learn more about the two gases exchanged between the body and the air during respiration.

link

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a