The simplest aquatic ecosystem can be seen in a ____________. Environmental Science May 24, 2020 Aroma Ann0 A. River B. Lake C. Pond D. Water TankRelated posts:Which ecosystem has the highest primary productivity? Lotic ecosystem refers to __________? In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is ____________. In an aquatic ecosystem, the depth to which light penetrates is called __________?