What happens to the covalent bond structure of water when it evaporates?

What happens is the hydrogen bonds connecting the water molecules together will break apart. Then the molecules will be in the gaseous state ... basically water vapor.

it is prolly d and c and f

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.