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Explain how the use of CNG in automobiles has reduced pollution in our cities.

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Combustion of fuels like petroleum causes the addition of many harmful pollutants like un-burnt carbon, particulate matter and many fume gases enter the air and cause respiratory diseases.

Compressed Natural Gas (CNG) produces these harmful products in very less quantity. It is a comparatively cleaner fuel. Therefore, the use of CNG has reduced pollution in our cities.
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