Air pollution caused by transportation is maximum in the _____________.
A
urban areas
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B
rural areas
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C
mountain areas
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D
coastal areas
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Solution
The correct option is A urban areas Road transport accounts for a third of NOx emissions and is the dominant source in urban, heavily-trafficked areas. The European Environment Agency estimates that road transport contributes to excessive concentrations about 70% for nitrogen dioxide (NO2) and about 30% for particulate matter (PM).