Question

lukas weaver*
which of these nitrogen cycle processes converts atmospheric nitrogen to a soil form of nitrogen that is usable by plants?
12/30
nitrogen fixation
nitrification
denitrification
assimilation
ammonification

Explanation:

Nitrogen fixation is the process where atmospheric nitrogen (\(N_2\)) is converted into ammonia (\(NH_3\)) or other nitrogen - containing compounds that plants can use. Nitrification converts ammonia to nitrites and then nitrates. Denitrification converts nitrates back to nitrogen gas. Assimilation is when plants take up nitrogen compounds. Ammonification is the conversion of organic nitrogen to ammonia. The key here is that nitrogen fixation specifically acts on atmospheric nitrogen to make it usable for plants.

Answer:

nitrogen fixation