Question

complete the flowchart
Please Answer Me​

Answer 1

                                          Nitrogen fixation

              ↓                                                                      ↓

           Biotic                                                           Abiotic

    - Rhizobium, Azotobacter.                          - Atmospheric, Industrial

Explanation:

Nitrogen fixation is a process to fix atmospheric nitrogen, as the atmospheric nitrogen is not readily available. Fixation means making it available by combining reactive elements with nitrogen. Compounds formed are ammonia, nitrates, or nitrites. Nitrogen can be fixed by:

A) Biotic: in two ways

1. Symbiotic:  Rhizobium.

2. Asymbiotic: Azotobacter.

B) Abiotic

1. Atmospheric: electric discharge.

2. Industrial

Bacterial like Rhizobium fix nitrogen in plants by nodule formation in leguminous plants. Plants need nitrogen, and these bacteria act like natural biofertilizers.