Scientists have determined that the high nitrate levels in local groundwater supplies are due to the use of soil fertilizers in
much of the surrounding agricultural area. The fertilizer could be considered a A. point source.
B. diffuse source.
C. non-point source.
D. concentrated source.
I believe D because if the fertilizer had a concentrated source of nitrate (which plants do need) then when watering that can go into the ground water which is underground <span />
