How is diffusion different from the other types of transport
I need at least a paragraph

Diffusion is different from other types of transport as it occurs in any type of mixtures. Diffusion occurs even when two solutions are separated by a semipermeable membrane.

Explanation:

Diffusion is the movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. Spraying of perfume in a room is an example of diffuion, since the smell of perfume diffuses from one part of room to another. One more type of transport is osmosis. Osmosis is a process 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 Cells of Our Bodies Absorb Water by Osmosis.

the dissolution of polymer can be thermodynamically described in 2 steps.