Nitrogen Cycle
What is Nitrogen Cycle?
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted between its various chemical forms as it circulates through atmospheric, terrestrial, and aquatic ecosystems. Key processes include nitrogen fixation (conversion of N₂ to ammonia by bacteria or lightning), nitrification, assimilation, ammonification, and denitrification. The cycle is critical for maintaining ecosystem fertility, as nitrogen is an essential component of amino acids, proteins, and nucleic acids.
Key Facts
Frequently Asked Questions
The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted between its various chemical forms as it circulates through atmospheric, terrestrial, and aquatic ecosystems. Key processes include nitrogen fixation (conversion of N₂ to ammonia by bacteria or lightning), nitrification, assimilation, ammonification, and denitrification. The cycle is critical for maintaining ecosystem fertility, as nitrogen is an essential component of amino acids, proteins, and nucleic acids.