<span>Decomposers break down dead
or decaying organisms, and in doing so, convert their basic materials
into forms more useful to the biological community, particularly plants.
The main decomposers in the environment include bacteria, fungi and
worms. Each of these plays a different, but overlapping, role in
decomposition</span>
Nitrogen Cycle steps:
N molecules breaking apart via nitrogen-fixing bacteria.
Animals ingest nitrogen in nitrate-containing food after plants use nitrogen-containing compounds.
The organic matter decays via decomposers
N2 is formed via denitrifying bacteria.
Explanation:
The nitrogen-fixing bacteria removes atmospheric nitrogen by fixing nitrogen through nitrification. The atmospheric nitrogen cannot be absorbed by plants and hence has to be converted into nitrates. This conversion takes place by nitrifying bacteria present in leguminous plants.
Animals (herbivores) consume the plants that have absorbed nitrogen/
When these animals die, decomposing bacteria acts on the dead organic matter, decomposition takes place through ammonification, converting the organic nitrates into ammonia
The nitrates are converted back again to nitrogen by the action of denitrifying bacteria.
The nitrogen thus formed is released to the atmosphere
Its either A or C. thats all i can say though but B and D you can rule out. I hope i helped a little
1inch 2cm 8ft have a nice day and good luck!