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16-02-2022
Chemistry

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How is oxygen within the biosphere?

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fatmaabdul1101 fatmaabdul1101

16-02-2022

Answer:

Free in the air and dissolved in water, oxygen is second only to nitrogen in abundance among uncombined elements in the atmosphere. Plants and animals use oxygen to respire and return it to the air and water as carbon dioxide (CO2). ... Oxygen is involved to some degree in all the other biogeochemical cycles.

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