GEOLOGY

Detailed explanation-1: -Phosphorus is an essential element for plant life, but when there is too much of it in water, it can speed up eutrophication (a reduction in dissolved oxygen in water bodies caused by an increase of mineral and organic nutrients) of rivers and lakes.

Detailed explanation-2: -The trophic state of a lake is a biological condition caused by various factors such as nitrogen and phosphorus, but also potentially affected by pH, turbidity, color, etc.

Detailed explanation-3: -Trophic state is the biological response for nutrient additions to the water bodies (Nauuman, 1929). The amount of nitrogen, phosphorus and other biological useful nutrients dissolved in the waters determine the trophic state of the lake. The water trophic is used to estimate its biological condition.

Detailed explanation-4: -Phosphates are chemical compounds containing phosphorus. Phosphorus is a non-metallic element which is necessary for life and is found in rock as inorganic phosphates. As water runs over and through rocks it carries off small amounts of minerals such as calcium, magnesium, and phosphates.