According to the diagram given below, the numbered stages 3 and 4 involve bacteria. Thus, the correct option for this question is C.
What is the Nitrogen cycle?
The nitrogen cycle may be characterized as a biogeochemical cycle by which nitrogen and its derivative compounds are significantly converted to one another in the environment as well as in living organisms like microbes including bacteria. This is actually completed through the process of nitrogen fixation, decomposition, etc.
Nitrogen fixation may be defined as a chemical process through which atmospheric nitrogen gets assimilated into the organic compounds through the action of microorganisms like bacteria. It includes Azotobacter, rhizobium, etc.
This organic form of nitrogen is further transformed into NO2 and NO3 with the help of Nitrosomonas and Nitrobacter respectively.
Therefore, according to the diagram given below, the numbered stages 3 and 4 involve bacteria. Thus, the correct option for this question is C.
To learn more about the Nitrogen cycle, refer to the link:
https://brainly.com/question/11662775
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