The average concentration of CO_2 in the atmo | vedclass

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(C) The concentration of carbon dioxide $(CO_2)$ in the Earth's atmosphere has been rising due to human activities. Historically,it was around $280 \

Vedclass · Accepted Answer

$300-400 \ ppm$

Vedclass · Answer

(C) The concentration of carbon dioxide $(CO_2)$ in the Earth's atmosphere has been rising due to human activities. Historically,it was around $280 \ ppm$ before the industrial revolution. In recent years,the average concentration has reached approximately $400 \ ppm$ (or $0.04\%$ by volume). Therefore,$300-400 \ ppm$ is the most accurate range among the given options.

The average concentration of $CO_2$ in the atmosphere is

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