Question

The best measure of the extent of nitrogen (N) pollution from landspreading of wastes from municipal sewage plants is the _______________ concentration in groundwater.

(A) Total nitrogen (TN) concentration in surface waters.
(B) Ammonia concentration in surface waters.
(C) Nitrate concentration in groundwater.
(D) Nitrous oxide emissions from soil.

Answer 1

The best measure of nitrogen pollution from landspreading of wastes from sewage plants is the nitrate concentration in groundwater.

Step-by-step explanation:

The best measure of the extent of nitrogen (N) pollution from landspreading of wastes from municipal sewage plants is the nitrate concentration in groundwater.

Elevated nitrate levels in groundwater can be caused by on-site sanitation, sewage sludge disposal, and agricultural activities. Nitrate in groundwater is a reliable indicator of nitrogen pollution originating from these sources.

Keywords: nitrogen pollution, landspreading, sewage plants, nitrate concentration, groundwater