how long does the oxygen cycle take?
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between 100-200 million years
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Answer:
between 100-200 million years
Explanation:
The Slow Carbon Cycle 'Through a series of chemical reactions and tectonic activity, carbon takes between to move between rocks, soil, ocean, and atmosphere in the slow carbon cycle
further explanation:
Oxygen exists in two different forms in nature. These forms occur as oxygen gas 21% and combined form in the form of oxides of metals and nonmetals, in the earth's crust, atmosphere, and water. It is also present in carbohydrates, fats, proteins.
Oxygen from the atmosphere is used up in three processes, namely combustion, respiration, and the formation of oxides of nitrogen. Oxygen is returned to the atmosphere by the process called photosynthesis.
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