The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is known as

The process whereby microorganisms can convert atmospheric nitrogen into nitrogenous compound is known as "nitrogen fixation". This process involves the conversion of atmospheric nitrogen gas (N2) into a form that can be used by plants and other organisms, such as ammonia (NH3) or nitrate (NO3-). Some microorganisms, such as certain bacteria, are able to perform this conversion through biological processes, such as nitrogenase activity. Nitrogen fixation is an important part of the global nitrogen cycle, and it plays a critical role in the growth and productivity of plants and other organisms.