The force that acts on the particles of a liquid of a surface is called 'Surface Tension'.
The potatoes would fill up with water. Osmosis is diffusion but with water. It always moves from the hypotonic (less solute) region to hypertonic (more solute). Good luck!
Dont live in the same climate or region. Just a guess. Hope this helps.
Transform boundary, meaning that they are pulled horizontally
Organisms gradually change the environment