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प्रश्न
Assertion (A): The amount of carbon dioxide in the atmosphere remained constant in the past.
Reason (R): Plants absorbed carbon dioxide during photosynthesis and give out oxygen, balancing the amount of carbon dioxide produced by natural processes.
विकल्प
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
A is false, but R is true.
MCQ
अभिकथन और तर्क
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उत्तर
Both A and R are true, and R is the correct explanation of A.
Explanation:
The concentration of atmospheric carbon dioxide remained balanced because natural carbon sinks, such as plants through photosynthesis, effectively offset the carbon dioxide released by natural geological and biological processes.
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