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Question

Why does the total amount of CO2 in the atmosphere remains constant even though respiration liberates CO2?

A
CO2 acts as a buffer
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B
CO2 is converted to carbohydrates in photosynthesis
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C
CO2 forms carbonic acid
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D
CO2 undergoes cleavage during photosynthesis.
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Solution

The correct option is C CO2 is converted to carbohydrates in photosynthesis
Most organisms release or exhale CO2 during respiration. This CO2 present in the environment is utilized by plants in the process of photosynthesis with the final product being a carbohydrate. This is how the amount of CO2 in the atmosphere is kept under check.
So, the correct answer is 'CO2 is converted to carbohydrates in photosynthesis'.

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