Which of the Following Statements About Human Alteration of the Nitrogen

Multiple Choice

Which of the following statements about human alteration of the nitrogen cycle is false?

A) Large quantities of nitric oxide are released into the atmosphere when fuel is burned.
B) Nitric oxide can be converted in the atmosphere to nitric acid, which contributes to acid deposition.
C) Eating protein puts "dead ends" in the nitrogen cycle.
D) Nitrate and ammonium ions are depleted from the soil by harvesting nitrogen-rich crops.
E) Irrigation of crops removes nitrogen from topsoil.