Look under “Feedback Loops in the Nitrogen Cycle.” When there is too much nitrogen in an aquatic environment, it’s a form of pollution. Nitrogen in the form of water pollution comes from _______.

Question

(1 point)
Responses

A. agricultural runoff
A. agricultural runoff

B. wastewater
B. wastewater

C. drainage from urban areas
C. drainage from urban areas

D. all of the above

Answer 1

D. all of the above