_____ converts atmospheric nitrogen into ammonium, which plants absorb. The plants, by _____, incorporate the ammonium into proteins.

Question

Nitrification, denitrification
Assimilation, nitrogen fixation
Ammonification, nitrification
Nitrogen fixation, assimilation

Answer 1

The correct answer is:

Nitrogen fixation, assimilation

Nitrogen fixation converts atmospheric nitrogen into ammonium, which plants can absorb. The plants then incorporate the ammonium into proteins through the process of assimilation.