What is the name of the process by which nitrogen gas is converted into ammonia by symbiotic or free-living microorganisms?

💡 Solution & Explanation

Nitrogen fixation is the biochemical process wherein atmospheric nitrogen gas is converted into ammonia by specialized microorganisms utilizing the nitrogenase enzyme. Nitrification and denitrification involve the conversion of ammonia into nitrates and nitrates into nitrogen gas respectively, while ammonification breaks down organic nitrogenous waste. This process is essential for making atmospheric nitrogen accessible to living organisms.