The action of substances from an locality of larger engrossment to an locality of less engrossment is called Diffusion. Osmosis is the diffusion of water through a selectively permeable membrane from an locality with larger engrossment of water to an locality with less concentration. A Hypertonic Solution is a answer of a higher engrossment of solutes and a lesser engrossment of water substances than another solution. However, an Isotonic Solution is a answer that comprises an identical engrossment of solutes and of water substances, the identical as another solution. A answer ...