The process that causes the strong two-atom nitrogen molecules to break apart so they can combine with other atoms. When it combines with oxygen and hydrogen.
When nitrogen fixes itself to a plant.
When nitrate turns into ammonia, then ammonia turns into plants, then the animals eat the plants and it is turned back into nitrogen.
When nitrogen gets fixed.
Fixation, Dentrification, Nitrification, Ammonification
Fixation, Nitrification, Ammonification, Dentrification
Nitrification, Ammonification, Dentrification, Fixation
Fixation, Nitrification, Dentirfication, Ammonification
They don't have nitrogen-fixing bacteria.
The amount of naturally occurring Nitrogen is not sufficient.
The triple bonds between 2 nitrogen atoms are hard to break.
None of the above.