Which of the following would be considered a "point source" of water pollution?
a. Oil collected from city streets and parking lots
b. Pesticide runoff from farms
c. Groundwater contamination at a fracking site
d. Fertilizer runoff from suburban neighborhood yards

c. Groundwater contamination at a fracking site

Explanation:

all others could be sources from tens of square kilometers of surface area.

Fracking is limited to within a short range of the well hole.

overcharge is the right answer system

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg