EARTH SCIENCE
CLIMATE AND ENVIRONMENTAL CHANGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The concentration of carbon dioxide in Earth’s atmosphere is at a record-breaking level
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For the very first time in history, carbon dioxide levels have exceeded 400 parts per million
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Carbon dioxide is a pollutant in the atmosphere
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None of the above
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Detailed explanation-1: -C. Carbon dioxide is a pollutant in the atmosphere. Answer C is a LIE. The concentration of CO2 in Earth’s atmosphere is at a record-breaking level.
Detailed explanation-2: -Is carbon dioxide an air pollutant? Carbon dioxide is not considered an air pollutant, as it occurs naturally in the air. However, the CO2 concentration in the atmosphere has significantly increased due to human activity. Carbon dioxide is a greenhouse gas; alongside nitrous oxide (N2O), and methane (CH4).
Detailed explanation-3: -Because, its excessive amount in atmosphere lead to global warming. The heat entering the earth’s atmosphere from sun is trapped by carbon dioxide hence leading to rise in temperature. Hence its excessive amount is considered as harmful to environment. So, it is considered as a pollutant.
Detailed explanation-4: -Carbon dioxide is considered as a pollutant. Although, carbon dioxide is a natural component of air, its concentration in the air has dramatically increased. This is because of the large scale burning of fossil fuels, which increase the amount of carbon dioxide in the air.
Detailed explanation-5: -Carbon monoxide (CO) is a clear, odourless gas. Smoke and exhaust fumes often contain carbon monoxide. Carbon monoxide is a common air pollutant.