Question

21 matching 2 points use the diagram of the nitrogen cycle below to match the letter with the correct term. nitrate nitrogen fixation nitrifying bacteria nitrogen gas

Explanation:

In the nitrogen - cycle diagram: Nitrate ($NO_3^-$) is represented by G as it is the product of nitrification processes shown in the diagram. Nitrogen fixation is the process of converting atmospheric nitrogen to a usable form and is represented by A where lightning can cause nitrogen fixation. Nitrifying bacteria are involved in the nitrification process and are not clearly indicated by B, D, F. Nitrogen gas is the most abundant form in the atmosphere and is represented by E.

Answer:

Nitrate: G
Nitrogen fixation: A
Nitrifying bacteria: None of the given options (B, D, F are incorrect)
Nitrogen gas: E