Up Automobile Emissions

By the 1960s, automobiles were huge contributors of lead, carbon monoxide, unburned hydrocarbons, and oxides of nitrogen (NO ) to the troposphere. The 1970 Clean Air Act set new standards for automobile 

Schematic diagram of a catalytic converter in an automobile that reduces oxides of nitrogen (NOJ to nitrogen (N2) and oxidizes unhumed hydrocarbons and carbon monoxide (CO) to carbon dioxide (CO2) 

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