Biogeochemical cycle Part 4// Oxygen Cycle

 

OXYGEN CYCLE


Oxygen cycle is a biogeochemical cycle in which movement of the oxygen occur through the atmosphere, biosphere and the lithosphere.

Its circulation happens along with carbon dioxide and water.

The amount of oxygen in the atmosphere is about 21%.

Oxygen is an important element required for life. It is mainly required for breathing, combustion, decomposition and rusting.

Oxygen enters the body of all living beings in the form of atmospheric oxygen.

The step involved in the oxygen cycle are-

·        During the process of photosynthesis green plants release oxygen back into the atmosphere.

·        This oxygen used by aerobic organism during the process of respiration.

·        Animals exhale carbon dioxide back into the atmosphere during the expiration.

·        This carbon dioxide is again used by the plants during photosynthesis.

In short, the oxygen of the atmosphere enters the body of living beings by the respiration and freely returns to the atmosphere by photosynthesis, thus the cycle of oxygen in the atmosphere continues.

The oxygen cycle is mainly involved in maintaining the level of oxygen in the atmosphere.


Oxygen Cycle


 

 


                                      

 

 

 

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