How can fish farming still deplete ecosystems? A. farmed fish often eat wild caught fish
B. fish farming always occurs in the wild
C. farmed fish always live in self contained units
D. farmed fish can be fed substainably grown grains​

I believe that the answer is B. Hope this helps!!

Really sorry if I am wrong! :(      

answer; ////increased water pollution; ///////////////////////

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.