Explain the differences between pure air and polluted air.

Difference between pure air and polluted air

Pure air Polluted air
Pure air consists of a mixture of gases in proper proportion which is good for living beings. Polluted air comprises contaminated substance and called pollutants
By volume about 78% of nitrogen, about 21% of oxygen and in very small quantities of carbon dioxide, argon, methane, ozone and water vapour These unwanted substances or gases involve sulphur dioxide, nitrogen dioxide, carbon monoxide, particulate matter,etc.
Pure air is always refreshing and safe to breathe Pollutant air contain harmful bacteria or virus and is not good for breathing

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