The Nitrogen Cycle

• First Step of the Nitrogen Cycle

  Nitrogen in animals is transferred into soil during decomposition of faeces and dead bodies through excretion and death.
• Second step of the Nitrogen Cycle

  Nitrogen in dead bodies is converted by bacteria into Ammonia then nitrites then nitrates.
• Third step of the Nitrogen Cycle

  Nitrates are taken in by plants and used to make proteins.
• Fourth step of Nitrogen Cycle

  Animals eat plants or other animals and use the nitrogen consumed to build protein.
• Fifth and final step of the Nitrogen Cycle

  Bacteria and fungi are essential in maintaining the nitrogen cycle.