the worldwide exchange of carbon dioxide and oxygen during photosynthesis and cellular respiration helps to…

the worldwide exchange of carbon dioxide and oxygen during photosynthesis and cellular respiration helps to keep these gases at what level in the atmosphere?\na higher than predicted levels\nb levels that are unpredictable\nc stable levels\nd unsafe levels
Answer
Brief Explanations:
Photosynthesis takes in carbon dioxide and releases oxygen, while cellular respiration takes in oxygen and releases carbon dioxide. This reciprocal global cycle balances the two gases, maintaining consistent concentrations in the atmosphere.
Answer:
c. Stable levels