Which of these characteristics differentiates electrons from protons and neutrons?
a. they do not move.
b. electrons are larger.
c. electrons are not in a fixed position.
d. they are located in the nucleus.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.