What differentiates galaxy groups from clusters?
a.
clusters are bigger than groups.
b.
clusters are more massive than groups.
c.
clusters contain a hot intracluster medium, whereas groups do not.
d.
clusters are collections of galaxy groups, whereas groups are collections of galaxies.
e.
clusters don't gravitationally bind galaxies together, while groups bind galaxies gravitationally,

i would say the answer is food.

hope this !

the answer is to check all of them! they all apply well at least i think so!

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

f=ma newton's second law 7x8=56n