Outdoor air pollution is a complex mixture of several pollutants, the common sources of outdoor pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry.
They major classes of outdoor pollutants include;
Carbon monoxide; carbon dioxide, sulfur dioxide, nitrogen oxides, VOC's, SPM's, photochemical oxidants, ozone and PANs.
True. isotopes of uranium i.e U 235 is used as nuclear fuel in power plants
This contributes because their lifestyle revolves around food, and if they live near different areas, they will have to search for different types of food.