Question

Name the substance involved in the exchange of gasses in unicelluar substances?​

Answer 1

• alveolus: a small air sac in the lungs, where oxygen and carbon dioxide are exchanged with the blood.
• bifurcate: to divide or fork into two channels or branches.
• bronchus: either of two airways, which are primary branches of the trachea, leading directly into the lungs.

• PLEASE THANKS MY ANSWERS AND MARK AS BRAINLIEST