The sources of pollution Anthropic pollution is putting the natural environment at risk: it causes the acidification of lakes, acid rain and even global warming (warming global). By identifying the sources of pollutants people can stop the spread of pollution. This work aims to discuss widespread sources of pollution and focuses on three examples of this immense problem. Pollution sources can be divided into point sources and diffuse/non-point sources; the former refers to pollutants that enter a natural system, such as a body of water, from a distinct location, via a direct route, such as a sewer pipe pouring sludge into a lake (Botkin, 1998). Diffuse pollution, on the other hand, arises from a multitude of different sources acting in combination, for example lake acidification can occur due to deforestation, runoff and a variety of other causes. These sources are often difficult to locate, thus making nonpoint pollution often difficult to correct (Camic, 1993). and therefore a reduction in biodiversity (Anderson, 2003). The polluting sources of internal eutrophication are numerous and varied, but agriculture and industrial areas are at the center of the problem (EPA, 2004). Recently there has been an increase in intensive farming and a consequent increase in livestock waste, fertilizers and pesticides (Reiss, 2000). Nutrient runoff from agricultural land may flow/seep into water bodies, e.g. In Norfolk waters, sewage sludge and waste solvents from industrial plants are also often inadequately disposed of and can end up in lakes (Anderson,2003). An increase in impervious surfaces, such as roads and concrete, has led to increased runoff (EPA, 2003). Acid rain is caused by emissions of nitrogen and sulfur oxides provided by the combustion of fossil fuels in power plants, the use of fertilizers and vehicle exhaust fumes (Beig,2004). Acidrain is particularly difficult to stop in terms of cutting sources because the world's population is growing and consequently so are the