A. the organisms that fit in boxes 2, 3, and 7
b. the organisms that fit in boxes 5 and 7
c. the organisms that fit in boxes 4 and 6
d. the organisms that fit in boxes 2 and 7 only

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water