Carbon dioxide is necessary for plants. Why do we consider it as a pollutant?
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
Carbon-di-oxide is considered as a pollutant because it is a green-house gas which is responsible for the global warming. This results in change of earth’s climate. Along with that excess CO2 is harmful for the plants. Increased CO2 levels changes physiology, growth and chemistry of plants. High CO2 concentration also causes suffocation, hard breathing and choking issues.
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