QUESTION $2$

Too much Nitrogen release to surface water typically leads to eutrophication issues in

a$.$ saltwater

b$.$ freshwater

QUESTION $3$

The release of excess carbon into freshwater from a wistewater treatment plant can result in what prominent impact?

a$.$ Discoloration

b$.$ A change in $pH$

c$.$ Low dissolved oxygen

d$.$ Cu release into the water column

QUESTION $4$

Pumping oxygen into the ground to enhance biodegradation is an example of $$ a$.$ ex$-$situ $-$ remediation.

b$.$ in$-$situ