GEOLOGY

Detailed explanation-1: -The main point source of pollution to water is from sewage and waste water treatment, while for diffuse pollution, main sources are from farming and fossil fuel power plants (via the air).

Detailed explanation-2: -The main water pollutants include bacteria, viruses, parasites, fertilisers, pesticides, pharmaceutical products, nitrates, phosphates, plastics, faecal waste and even radioactive substances. These substances do not always change the colour of the water, meaning that they are often invisible pollutants.

Detailed explanation-3: -mobile sources – such as cars, buses, planes, trucks, and trains. stationary sources – such as power plants, oil refineries, industrial facilities, and factories. area sources – such as agricultural areas, cities, and wood burning fireplaces. natural sources – such as wind-blown dust, wildfires, and volcanoes.

Detailed explanation-4: -Industrial Waste. Sewage and Wastewater. Mining Activities. Marine Dumping. Accidental Oil Leakage. The burning of fossil fuels. Chemical fertilizers and pesticides. Leakage From Sewer Lines. More items

Detailed explanation-5: -Urbanization. Deforestation. Industrial effluents. Social and Religious Practices. Use of Detergents and Fertilizers. Agricultural run-offs-Use of insecticides and pesticides.