what is ozone Oxygen cycle
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Ozone Cycle
The oxygen cycle is the biogeochemical transitions of oxygen atoms between different oxidation states in ions, oxides, and molecules through redox reactions within and between the spheres/reservoirs of the planet Earth. The word oxygen in the literature typically refers to the most common oxygen allotrope, elemental/diatomic oxygen (O₂), as it is a common product or reactant of many biogeochemical redox reactions within the cycle. Processes within the oxygen cycle are considered to be biological or geological and are evaluated as either a source (O₂ production) or sink (O₂ consumption).
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oxygen form 21% of the atmosphere
it also present in the hydrosphere and lithosphere.
circulation and recycling of oxygen cycle
within the biophere is called the biotic and abiotic components.
oxygen is continuously produced as well as used up in the atmosphere..........