GEOLOGY

Detailed explanation-1: -Fertilizers are made of nutrients, such as nitrogen and phosphorus. When it rains, these nutrients are carried by storm-water into the nearest stream, river, or other water body. Too many nutrients in water can cause algae to grow, which uses up the oxygen in the water.

Detailed explanation-2: -Nutrient pollution is the process where too many nutrients, mainly nitrogen and phosphorus, are added to bodies of water and can act like fertilizer, causing excessive growth of algae. Nutrients can run off of land in urban areas where lawn and garden fertilizers are used.

Detailed explanation-3: -According to the EPA, the leading source of pollution in surface drinking water supplies is polluted rainwater runoff.

Detailed explanation-4: -Industrial discharge contains a large number of hazardous chemicals. It discharges these chemicals directly into the rivers, lakes, or nearby water bodies. These highly toxic chemicals may harm aquatic animals and human beings. Many factories also use freshwater to carry away their waste into the water bodies.