Dog Dry Skin at a glance. 1Dry skin is itchy and uncomfortable, and dogs will scratch, lick, and bite to relieve their symptoms. 2Dry dog skin may appear red, flaky, scaly, or otherwise irritated. 3There are many causes of dry dog skin, and the treatment will depend on the cause.
Definition of Brownian motion. : a random movement of microscopic particles suspended in liquids or gases resulting from the impact of molecules of the surrounding medium âcalled also Brownian movement.
Diffusion and passive transport: Molecules are in constant motion, moving around randomly (Brownian movement). One result of this random motion is diffusion, the net movement of molecules from an area where their concentration is high to an area where their concentration is lower.