There are different star systems. Binary star systems consist of two stars. Multiple star systems consist of two or more stars. The meaning of star system is "A small number of stars."
I think it's either A) a group of hundreds of stars, or B) a group of two or more stars. I would assume it's B), but i could be wrong.
Hope this helps!
Answer:
B
Explanation:
negative feedback is used to regulate feedback
The answer is b i did the quiz
Enzymes break up the electrons of water to yield oxygen and hydrogen gas
