what is oxygen cycle
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The oxygen cycle is the biogeochemical cycle of oxygen within its four main reservoirs: the atmosphere, the total content of biological matter within the biosphere, the hydrosphere, and the lithosphere/Earth's crust. ✓✓✓
beautyjaya25:
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The oxygen cycle elaborates how oxygen circulates in various forms through nature. Oxygen occurs freely in the air, trapped in the earth crust as chemical compounds
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