Diffusion is the movement of cells from a high concetrated area to a low concentrated area.
Osmosis is the movement of cells through a semipermeable membrane.
A semipermeable membrane is a membrane that only lets certain cells through because of its tiny wholes.
The spray starts at a high concentration and spreads to a lower concentration.
Water going through a water filter that doesn't let dirt pass through.
A strainer only lets small things through like water but not noodles.
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