Question

पर्ाथर्:आशंका,
, अप्रत्यालशत , लिख्यात
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Answer 1

Explanation:

The oxygen cycle is the cycle that helps move oxygen through the three main regions of the Earth, the Atmosphere, the Biosphere, and the Lithosphere. The Atmosphere is of course the region of gases that lies above the Earth's surface and it is one of the largest reservoirs of free oxygen on earth.