Substances<span> move in and </span>out of cells<span> by diffusion down a concentration gradient, through a partially permeable membrane. The efficiency of </span>movement of substances in and out<span> of a </span>cell<span> is determined by its volume to surface area ratio. ... Osmosis is a type of diffusion but refers only to the </span>movement<span> of water molecules.</span>
The cerebral cortex is considered the ultimate control and information-processing center in the brain.The area of the cerebral cortex in the human brain which controls voluntary muscle movement is the motor cortex. The motor cortex is responsible and involved <span> in the planning, control, and execution of </span>voluntary movements<span>. </span>
<span>The motor cortex is located in the frontal lobe of the cerebral cortex.</span>
1983-1984 was when it was discovered
Answer:
maybe they think it will make them magical?
Explanation:
