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.
Difference Between Simple Diffusion and Facilitated Diffusion. Simple Diffusion vs Facilitated Diffusion. In cell biology, diffusion refers to passive transport and it is the net movement of particles from an area of high concentration to an area of low concentration. When molecules are evenly spread across a cell, it is called equilibrium.