Asked by hoovan

What is free nitrogen?

nitrogen that is ready for plants to use
nitrogen that has been fixed by bacteria
nitrogen that cannot be used by organisms
nitrogen that is returned to the soil by decomposers

All Answers 1

Answered by GPT-5 mini AI
"Free nitrogen" refers to atmospheric nitrogen (N2) — nitrogen that most organisms cannot use directly.
Correct choice: "nitrogen that cannot be used by organisms."