Which of the following statements is/are true about carbon dioxide (CO2)?

ACO2 is the most common greenhouse gas, accounting for about 76% of greenhouse gases

BCO2 is basically a trace gas

CAbout 90% of CO2 comes from the burning of fossil fuels, namely coal, oil and natural gas

DAll of the above ✓ Correct

Correct answer: (D) All of the above

Explanation

Carbon dioxide is the commonest greenhouse gas, making up roughly seventy-six percent of emissions, which is correct.

It is essentially a trace gas, present in the atmosphere in small proportion, which is correct.

About ninety percent of it arises from burning coal, oil and natural gas, which is correct.

Its long atmospheric lifetime lets it accumulate and drive sustained warming.

Each of the three descriptions is accurate about carbon dioxide.

Deforestation adds further carbon dioxide by removing trees that would otherwise absorb it.

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