Final answer:
The source of non-anthropogenic air pollution not listed is c) Industrial emissions, as they are caused by human activities, contrary to volcanic eruptions, forest fires, or pollen which can be natural.
Step-by-step explanation:
The source of non-anthropogenic air pollution that is not listed among the options provided is c) Industrial emissions. These emissions are anthropogenic, meaning they are caused by human activities. Unlike industrial emissions, volcanic eruptions and forest fires can occur naturally and are considered non-anthropogenic sources of air pollution, while pollen is a natural biological material dispersed in the air.
Air pollution caused by natural sources includes events such as volcanic eruptions, which release particulate matter and gases, and forest fires that generate particles. Mobile sources of air pollution include vehicles, aircraft, and other forms of transportation, while stationary sources refer to factories, power plants, and other fixed-location emitters. Anthropogenic sources aid in the proliferation of air pollution through the burning of fossil fuels, agricultural practices, and industrial activities.