Nitrogen Cycle

2.3  Nitrogen Cycle
Processes that add nitrate ions to the soil Processes that extract nitrate ions from the soil
  • Lightning and volcanic eruptions
  • Nitrogen fixation
  • Nitrification
  • Process of absorbing nitrate ions from the soil
  • Denitrification
  • Nitrate leaching

3. Importance of nitrogen cycle

  • Maintaining nitrogen content in the air.
  • Maintaining fertility of the soil and increasing productivity of crops
  • Maintaining a continuous supply of plant proteins and animal proteins
  • Reducing environmental pollution