Final answer:
In capillaries, the exchange of gases, nutrients, and waste products occurs through diffusion. Oxygen is released to tissues while carbon dioxide is absorbed from tissues.
Step-by-step explanation:
In capillaries, the exchange of gases, nutrients, and waste products between the blood and the tissues occurs. Oxygen is released from the capillaries and into the body tissues, while carbon dioxide is absorbed from the tissues and into the capillaries. The process of gas exchange occurs through diffusion, where oxygen moves from the capillaries into the body cells, and carbon dioxide moves from the cells into the capillaries.