Final answer:
Gas exchange in the body occurs through simple diffusion driven by pressure gradients in the lungs and tissues.
Explanation:
Gas Exchange in Organs and Tissues
Gas exchange occurs in the lungs, where oxygen is picked up and carbon dioxide is released, and in the tissues, where oxygen is released and carbon dioxide is picked up. This process relies on simple diffusion driven by pressure gradients that allow gases like oxygen and carbon dioxide to move across membranes.
Learn more about Gas exchange in the body here:
https://brainly.com/question/39779739
