Question 7 (1 point)
which of the following causes quasars to be formed?
the area becomes too concentrated with stars.
superclusters develop, resulting in a gravitational binding.
too many stars die at one time.
black holes suck in matter too quickly.

I believe the correct choice is D. Black holes suck in matter too quickly

Hope this helps

-AaronWiseIsBae

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d