Synergism.
Synergism happens when two or more chemicals enter the body and create adverse side effects/health concerns because of their use together. The effects of the two chemicals together is greater than the sum of the effects of the two individual chemicals.
The cell wall protects the cell from other bacteria and virus attacks.I also forms a protective suit around the cell.
" C " but I am not a 100% sure
<span>The whole brain is not gray matter, just the surface of it and parts of the interior, and there is other gray matter in nerve tissue along the spinal column. </span>
Answer: if choice D is a virus , then its an exception to the cell theory
