Diffusion Substances move from a high to a low concentration down a concentration gradient Carbon dioxide, oxygen, water, food substances, wastes, eg urea No Osmosis Water moves from a high to a ...

Diffusion and Osmosis. 4/8/2019 | 26m 46s Video has Closed Captions | CC. Smelly particles, wilted veggies, and growing jellies! Aired 04/08/2019 | Rating TV-G ...

Diffusion is a process that has been known and used for centuries. In the ancient times, people who dyed fabrics began to notice the cause of spreading turquoise dye in their cotton cloth; biologists, ...