Multiple choice

What amount of carbon is present in atmosphere as CO2?

  1. 0.03 %

  2. 0.02 %

  3. 0.01 %

  4. None of these
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A Correct answer
Explanation

The concentration of carbon dioxide in the Earth's atmosphere is approximately 0.03 to 0.04 percent by volume. Among the choices provided, 0.03% is the standard accepted value.

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