NEET BIOLOGY

Detailed explanation-1: -High concentration means the density of the material is greater than what surrounds it. This is in contrast to a lower concentration where the density of material would be less. This is helpful in explaining the natural motion of materials because they naturally move from high concentration to lower.

Detailed explanation-2: -Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.

Detailed explanation-3: -Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. The difference in the concentrations of the molecules in the two areas is called the concentration gradient. Diffusion will continue until this gradient has been eliminated.

Detailed explanation-4: -Diffusion is defined as the net movement of molecules from an area of greater concentration to an area of lesser concentration. The molecules in a gas, a liquid or a solid are in constant motion due to their kinetic energy.