The answer to this is a group of individuals many species living in an area.
I believe the answer is littoral zones.
Sorry if I'm wrong, Hope this helps.
Answer:
ureters
Explanation:
The ureters are two tubes that drain urine from the kidneys to the bladder. Each ureter is a muscular tube that drains into the bladder. Smooth muscle contractions in the walls of the ureters, over time, send the urine in small spurts into the bladder, the organ where urine is stored before it can be eliminated.
A. Catabolic because it brings substances together
