The Graph Below Shows Atmospheric Concentration of CO₂ as Recorded

question 52

Multiple Choice

The graph below shows atmospheric concentration of CO₂ as recorded at the Mauna Loa Observatory. From the graph we can see that there are seasonal fluctuations in CO₂ concentrations that correspond with:

• A)Plants taking up more carbon dioxide in the growing season.
• B)Temperatures fluctuating between day and night.
• C)Plants releasing more carbon dioxide in the growing season.
• D)Cattle producing more methane in the summer when they are grazing.

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Definitions:

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