Final answer:
Osmosis and diffusion use semi-permeable membranes.
Step-by-step explanation:
Osmosis and diffusion use semi-permeable membranes. Osmosis is the movement of water from a region of high water concentration to a region of low water concentration through a semi-permeable membrane. Diffusion, on the other hand, is the movement of substances from an area of high concentration to an area of low concentration, which can also occur through a semi-permeable membrane.