Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
I think it would be crust
Answer:
Fog dispersal, artificial dissipation of fogs, usually by seeding or heating. ... It is done primarily at airports to improve visibility.