What transports oxygen
depleted blood to the
lungs to exchange co2
for o2?

Red Blood Cells

Explanation:

Oxygen is one of the substances transported with the assistance of red blood cells. The red blood cells contain a pigment called haemoglobin, each molecule of which binds four oxygen molecules. Oxyhaemoglobin forms. The oxygen molecules are carried to individual cells in the body tissue where they are released.

answer; i believe the answer is hydraulic action;