Final answer:
Diffusion in biology involves the movement of substances through random molecular motion, including passive diffusion, osmosis, and facilitated diffusion.
Explanation:
Diffusion is the movement of substances due to random thermal molecular motion. It can occur through various types such as passive diffusion, osmosis, and facilitated diffusion. For example, oxygen and carbon dioxide easily cross cell membranes through simple diffusion.
Learn more about Diffusion in Biology here:
https://brainly.com/question/495875
