Which of the following is not an example of "fixing" nitrogen?
A)Scientists combine dinitrogen and hydrogen gases to form ammonia.
B)Bacteria convert dinitrogen from the atmosphere into ammonium ion and nitrate ion containing compounds.
C)Denitrifying bacteria decompose organic compounds into dinitrogen gas.
D)When magnesium combusts in air,some magnesium also reacts with dinitrogen to produce magnesium nitride.
E)Lightning strikes in the atmosphere produce nitrogen monoxide from dinitrogen and dioxygen gases.

Question

Quizplus · Accepted Answer

Denitrifying bacteria breaking down organic compounds into dinitrogen gas is not an example of fixing nitrogen. Instead, it is a process called nitrogen mineralization, which releases nitrogen from organic matter back into the soil. Fixing nitrogen refers to the conversion of atmospheric dinitrogen gas into a usable form of nitrogen, such as ammonia or nitrate ions.

Which of the Following Is Not an Example of "Fixing