MCQ - CBSE Class 9 Science 

Carbon dioxide is necessary for plants. Why do we consider it as a pollutant ?

Ajit kumar 49 Views 0 Comments
Q. Carbon dioxide is necessary for plants. Why do we consider it as a pollutant ?
Ans. Increasing concentration (more than normal) of CO2 is harmful and considered as a pollutant. Higher concentrations of CO2 is one of the causes of greenhouse effect / global warming.

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