Question

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

  • Natural resources CBSE Class 9
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Answer

Plants require CO2 in an optimum amount for the process of photosynthesis. But, high concentration of (more than normal) CO2 is harmful and considered as a pollutant. Higher concentration of CO2 is one of the causes of greenhouse effect and global

warming as it absorbs the infrared radiations thus increasing the temperature of Earth. This leads to many environmental problems.

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