Question

Which of the following are the sources of $C{O}_2$ production?

• A. Respiration
• B. Decomposition of limestone
• C. Burning of fossil fuels
• D. All of the above

Answer 1

The correct option is D All of the above

Respiration, decomposition of limestone, burning of fossil fuels and during volcanic eruptions are the major sources of $C{O}_2$ production. Hence, the correct answer is option (d).