They must have the code in their genes in order to express it and they can have the code but not express the trait depending on the regulatory mechanisms which determine if the genes are turned on or off
At the same time, carbon dioxide molecules diffuse rapidly out of the red blood cells<span>, down their concentration gradient, and into your lungs. When </span>water<span> molecules </span>move <span>freely </span>across a cell membrane<span>, the process is called OSMOSIS , which is just a special type of simple diffusion.</span>
I think it is A . eubacteria
in controls the body to function to balance and it communicates with the other sensory organs