Where do most human inputs of outdoor air pollutants occur?

in the mountains

around oceans

in deserts

in urban areas

in urban areas is the correct answer.

Explanation:

most human inputs of outdoor air pollutants occur in the urban areas.

its occur in the urban areas because of the following reasons

In the urban areas, people are more depended on cars, vehicles and chemicals industries that are there which give rise to outdoor air pollutants. burning of fossil fuels in the power factory, in a machine vehicle and the industrial plants, generate large outdoor pollutants in the urban areas.

Answer:in urban areas let me know if i was right or wrong