31) Water pollution

a) What is water pollution?

b) Why is water an essential element of nature?

c) How can it be polluted?

d) What happens if we drink polluted water?

e) How can it be purified?

****Water is a very important element of environment. It is an essential element of nature because it saves all kinds of lives on earth. Clean water is healthful but polluted water is very harmful. Nowadays water pollution is one of the serious problems that humanity face. Water pollution refers to the contamination of water by filth. waste or other substances. It can be polluted in many ways. Water is polluted by using chemical fertilizers and various insecticides in the land when they are washed away by rain or flood. Mills and factories throw their waste products into rivers and canals and thus pollute water. Again motor launches, steámers pollute water by throwing oil, food waste and human waste. Another aspect is pollution of underground water by arsenic. By drinking this polluted water, we often get sick and may even die. So, we must prevent water pollution at any cost. Water can be purified by boiling it and using purifying tablets. All concerned must be conscious to keep water free from pollution. Govt. should take comprehensive programme to check water pollution. Above all, for a healthier and a happier life, massive awareness must be created against water pollution.

Word meaning :-

  1. Harmful:- ক্ষতিকর
  2. Insecticides:- কীটনাশক
  3. Products:- জিনিস
  4. Healthful:- স্বাস্থ্যকর
  5. Element:- উপাদান






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