Reputation: 1571. E-filed in Early February and it took about 7 weeks to get my refund. It might have something to do with the amount as well. I got back $1,500 from the state which is probably more than most people get, so it could have taken longer for the larger payment.
Diffusion and Osmosis. Diffusion. -the process by which molecules spread from areas of high concentration, to areas of low concentration. Concentration gradient - a difference between concentrations in a space. Molecules will always move down the concentration gradient, toward areas of lesser concentration.
Diffusion also plays a part in moving substances into. and out of cells. For example, imagine an amoeba living in water. The concentration of dissolved carbon dioxide gas in the. water is the same as the concentration of dissolved. carbon dioxide gas in the amoeba's cytoplasm.