According to the passage, which of the following i...

Câu hỏi: According to the passage, which of the following is true about human generated air pollution in localized regions?

A It can be dwarfed by nature’s output of pollutants in the localized region.

B It can overwhelm the natural system that removes pollutants.

C It will damage areas outside of the localized regions.

D It will react harmfully with naturally occurring pollutants.