B. The PNS is the voluntary response to stimuli. You get to choose what you want to do with the stimuli
The flattening of our solar system likely helped changed random motions into more orderly ones
Doesn’t normally happen until your 40’s or 50’s
Cells die over the course of life as new ones are formed which makes the body able to grow at a natural pace. Rapid cell division causes cancer because it is cells being crowded from too much cell division.