Answer:
(D) None of the above is true
Explanation:
One problem with constructing a perfectly complete realistic economic model is that none of the above is true. Therefore, it would be far too complicated to analyze, it would be too simplistic to have any value, and politicians see little value in such a model are all FALSE.
Answer:
Nitrogen eventually breaks down
Explanation:
nitrogen is compounded in soil and broken down completely by microorganisms through a process known as nitrification
