GEOLOGY

Detailed explanation-1: -Eutrophication is defined as an increase in nutrient input to surface waters to the extent of overenrichment, with a corresponding increase in primary productivity and related negative effects. Eutrophication is widely recognized as a serious, primarily human-caused (anthropogenic) environmental issue.

Detailed explanation-2: -Anthropogenic eutrophication is caused by human activity – Agricultural farms, golf courses, lawns, etc. are supplied with nutrients by humans in the form of fertilizers. These fertilizers are washed away by rains and eventually find their way into water bodies such as lakes and rivers.

Detailed explanation-3: -Cultural eutrophication is the process that speeds up natural eutrophication because of human activity. There are three main sources of anthropogenic nutrient input: erosion and leaching from fertilized agricultural areas, and sewage from cities and industrial waste water.

Detailed explanation-4: -Cultural eutrophication Cultural or anthropogenic eutrophication is the process that speeds up natural eutrophication because of human activity.

Detailed explanation-5: -Natural eutrophication, where the basin gradually fills in from nutrient and sediment inputs, occurs over long time periods – on the order of centuries. Human-induced, or cultural eutrophication, occurs on a much shorter time scale (decades) as a result of human disturbance and nutrient inputs.