Excess dissolved solids make water not good for one to drink or to use it for crop irrigation. Water is a powerful solvent, it stores heat and cold well. It conducts heat away from warm bodies much quicker than air does. It dissolves more solids than any other solvent, like dirt. The physical properties and the chemical properties make it act as a positively charge pole due to its hydrogen atoms that are attached to the oxygen atom, which acts as a negatively charge pole.
Lakes can become aged by the over fertilization.
Here in Chicago, at Lake Michigan, the interaction of microorganisms play an important role in maintaining the quality of the water. By the studies of the microscopic communities, the health of the water is determined. Certain plants and animals are considered biotic indicators because their presence or absence can tell whether the lake is healthy or not. Life in water has brought other basic physiological and behavioral changes. In extreme cases where high oxygen consumption may cause an oxygen depression and fish may die and other organisms, too.