Respuesta :

  • Oxygen cycle is the cycle which maintains the level of oxygen in the atmosphere.
  • Oxygen from the atmosphere is used up during combustion, respiration and in the formation of oxides of nitrogen.
  • This oxygen is returned to the atmosphere by lithosphere.
  • This forms the oxygen cycle in nature.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Otras preguntas