Compared to Organic Nitrogen Sources, Commercial Nitrogen-Containing Fertilizer Is an Imperfect

Compared to organic nitrogen sources, commercial nitrogen-containing fertilizer is an imperfect solution to the worldwide problem of soil degradation because

A) its production requires a great deal of energy.
B) it pollutes lakes and streams.
C) soil applications do not always benefit the plants.
D) the cost of shipping offsets the benefits to agricultural production.
E) it can never be as good as organic sources.