Answer:
Oxygen Cycle
Explanation:
The oxygen cycle can be considered the set of components of the oxygen reservoirs that are exchanged in our environment and guarantee the circulation of oxygen on the planet. Oxygen is extremely important, because without it, cellular respiration does not occur and its lack would be the main cause of death for most living beings.
The oxygen cycle allows oxygen to be used by living beings, recycled and returned to nature where it can be used again.
