These dangerous chemicals (in the form of solid, liquid or gases) mixes with water and make it unsafe for living bodies. Water pollutants cause harm to human-beings, animals, trees and other constituents of environment. Effect of water pollution on human health Presence of toxic metals in water may cause skin disease, dysentery, amoebiasis, anorexia, etc. Radioactive substances present in water may lead to radioactive pollution causing cancer. In polluted water the different water borne virus, bacteria, and protozoa are present. They cause small diseases likely pox, chicken pox, dysentery, amoebiasis, tuberculosis etc. Control of water pollution The toxic industrial and agricultural runoff should be properly treated before mixing with water sources. Drinking water should be properly treated to make it free from any germs. The sewage system should be much more scientific. The waste water should be purified before it goes to the river. The toxic chemicals from industries should be properly treated prior to discharge into the environment. Cultivation of Salvinia and Azolla in the pond or lake can fix toxic metal and hence metal pollution can be reduced. The domestic or household effluents should be discharged properly.

@Sharie

よく勉強してください!!!

I used to be very confident in my English communication ability, but that day was the day that made me realize that I was very weak. That day, I met an elderly man who was very confused, looking back and forth. As if to express myself, I went to ask him what his problem was. He told me in English but somehow I don't know what he was trying to say. Suddenly a man came running, communicating with him in a very professional manner, who was just the receptionist in the opposite hotel and finally helped to solve the problem for him. When asked how this person could communicate with him, this person only answered that he was a native of the southern part of the United States because he was a old men, so he had quite old English so if he did not communicate. It is difficult to understand for a long time.