Asked by hoovan
hat 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
You mean "What is free nitrogen?" The correct choice is:
- nitrogen that cannot be used by organisms
Explanation: "Free nitrogen" refers to atmospheric N2, which is chemically inert and unavailable to most organisms. It must be converted (fixed) into usable forms like ammonium or nitrate by nitrogen-fixing bacteria, lightning, or industrial processes before plants and other organisms can use it.
- nitrogen that cannot be used by organisms
Explanation: "Free nitrogen" refers to atmospheric N2, which is chemically inert and unavailable to most organisms. It must be converted (fixed) into usable forms like ammonium or nitrate by nitrogen-fixing bacteria, lightning, or industrial processes before plants and other organisms can use it.
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