________ are usually the most obvious form of air pollution because they reduce visibility and leave deposits of dirt on the surfaces with which they come in contact.

Question

Quizplus · Accepted Answer

Particulates are small particles of solid or liquid matter that are present in the air. They are usually visible because they reduce visibility and can leave dirty deposits on surfaces. Volatile organics, sulfur oxides, and nitrogen oxides do not have a direct impact on visibility or leave visible deposits.

________ Are Usually the Most Obvious Form of Air Pollution