Biology, 31.01.2020 08:46 aubreyfoster

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.

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Scientists have determined that the high nitrate levels in local groundwater supplies are due to the...