The pollutants which are already present in n | vedclass

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(D) Quantitative pollutants are those substances which are already present in the environment,but are termed as pollutants when their concentration (q

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Quantitative pollutants

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(D) Quantitative pollutants are those substances which are already present in the environment,but are termed as pollutants when their concentration (quantity) increases in the environment.For example,$CO_{2}$ is naturally present in the environment,but its concentration increases due to human activities like burning fossil fuels,which makes it a quantitative pollutant.

The pollutants which are already present in nature,but are released in substantial amounts by man are known as

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