How is atmospheric oxygen linked to the carbon cycle?
A) More burial of organic carbon in sediments results in more oxygen in the atmosphere and oceans.
B) More photosynthesis leads to more oxygen in the atmosphere and oceans.
C) More volcanic CO2 emission leads to more oxygen in the atmosphere and oceans.
D) Longer food chains with more consumers lead to more oxygen in the atmosphere and oceans.
Correct Answer:
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