Question

What is nitrogen fixation

Answer 1

Process by which free nitrogen (N2) is extracted from the atmosphere and converted (fixed) into nitrogen compounds which are plant nutrients (fertilizer). In nature, this process is carried out by certain bacteria (present in the root nodules of legumes such as beans and peas), blue-green algae, and the lightning flash.

Answer 2

The fixation of nitrogen in atmosphere in order to help out plants in growing.
For example rhizobium,a bacterium helps to fix nitrogen by a leguminous plants such as pea plant.