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In the Figure Below,why Is There a Seasonal Variation in Carbon

Question 31

Multiple Choice

In the figure below,why is there a seasonal variation in carbon dioxide (CO2) concentrations? In the figure below,why is there a seasonal variation in carbon dioxide (CO<sub>2</sub>) concentrations? A) CO<sub>2</sub> concentrations rise and fall as photosynthesis decreases and increases. B) CO<sub>2</sub> concentrations rise and fall in conjunction with power plant emissions. C) CO<sub>2</sub> concentrations rise and fall with variations in solar radiation. D) The measurements were made in different places at different times of year.


A) CO2 concentrations rise and fall as photosynthesis decreases and increases.
B) CO2 concentrations rise and fall in conjunction with power plant emissions.
C) CO2 concentrations rise and fall with variations in solar radiation.
D) The measurements were made in different places at different times of year.

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