Based on the relationship between photosynthesis and CO2, explain why CO2 concentrations cycle over the course of a year?

Explanation:

the amount of CO2 found in the atmospheres varies over the course of a year how much of this variation happens because of the role of plants in the carbon cycle respiration occurs all the time but dominates during the colder months of the year resulting in higher CO2 levels in the atmosphere during those months.

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