Sweat glands. :)
Perspiration leaves the body through the sweat glands.
I think the correct answer from the choices listed above is option B. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will <span>stop moving across the membrane. This is because equilibrium has already been achieved and there is no more driving force which is the concentration gradient present.</span>
Complex organisms need cells that can perform many different functions. they need to be supported on a cellular level. Without specialized cells you they won't be able to perform different functions.
It is called amino acids,amino acids are molecules composed of atoms of carbon, hydrogen,nitrogen, oxygen, and in some cases sulfur. Hope this helps