ABSTRACT
A heap of detritus similar to the dump outside provides the rest of the reek. The term “organic” is commonly used to refer to what is natural by individuals outside scientific circles—“organic” produce, for example, is produce grown without artificial fertilizers or pesticides. Physical pollutants consist primarily of solid materials found in inappropriate locations. Trash sitting in a vacant lot is an example of a physical pollutant. Soil carried in stormwater runoff from city streets, tarmac, construction sites, agricultural fields is another example. Radioactive chemicals found naturally in rocks, water, and soil are radioactive pollutants. Microorganisms do not have to be alive to become biological pollutants. Dead microorganisms and parts of organisms can also pollute air, water, and to a lesser extent, soil. The old gentleman had been hired many years earlier by young town councilman to clear away the debris from the pools of water up in the mountain crevices that fed the lovely spring flowing through their town.
