-intermingling of substances by the natural movement of their particles
-a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane.
-the taking in of matter in the living cell
-a process by which the content of the cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane
hope this helped ha.