what are the sources of the second one?
Volcanoes, dust storms, and burning of fossil fuels in vehicles.
Particulates
Some particulates occur naturally, originating from volcanoes, dust storms, forest and grassland fires, living vegetation and sea spray. Human activities, such as the burning of fossil fuels in vehicles, stubble burning, power plants, road dust, wet cooling towers in cooling systems and various industrial processes, also generate significant amounts of particulates.
what is rhodotus? Genus in the fungus family Physalacriaceae. is it edible? No where is it found? Eastern North America, northern Africa, Europe, and Asia. is it endangered in any way? Yes, critically endangered. what is the criteria for this status? Increase in levels of air pollution. which are the common contributors to this type of pollution? Gases, particulates, and biological molecules.
wiki:13958799
Particulates [SEP] Sources of atmospheric particulate matter
Some particulates occur naturally, originating from volcanoes, dust storms, forest and grassland fires, living vegetation and sea spray. Human activities, such as the burning of fossil fuels in vehicles, stubble burning, power plants, road dust, wet cooling towers in cooling systems and various industrial processes, also generate significant amounts of particulates. Coal combustion in developing countries is the primary method for heating homes and supplying energy. Because salt spray over the oceans is the overwhelmingly most common form of particulate in the atmosphere, "anthropogenic" aerosols—those made by human activities—currently account for about 10 percent of the total mass of aerosols in our atmosphere.