Previous year MCQs

Environment & Ecology UPPSC 2017 GS-I
Question

Which of the following is considered to be the optimum concentration of carbon dioxide for natural balance in atmosphere?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: 0.04%

Detailed Solution:

The correct answer is “0.04%”.
The concentration of carbon dioxide (CO₂) in the Earth's atmosphere is typically around 0.03% to 0.04% (300-400 parts per million). This level is considered to be within the natural balance necessary for maintaining Earth's climate and supporting plant photosynthesis.

Similar Questions:

Natural resources should be used by the present generation in such a way that if there is minimum degradation of natural resources, then what kind of development would it be called?
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  3. C) Social Development
  4. D) Organic Development
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  2. B) 0.03%
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  3. C) 1990
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