The process by which oxygen and carbon dioxide are exchanged between cells, the blood, and air in the lungs is one type of

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Where substance is produced during cellular respiration

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body