300 words on pollution
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Answers
Answer---
Pollution means the process of making air ,water ,soil ,etc. dirty . Smoke from chimneys, emission of gases by vehicles, wastesand other harmful substances are mainly responsible for pollution. Industries contribute significantly to the pollution of land, water ,air ,noise and resulting degradation of environment .The polluting Industries also include thermal power plants .In large industrial Centres, this problem has become all the more serious.
Air pollution is caused by the presence of high proportion of undesirable gases ,such as sulphur dioxide and carbon monoxide .smoke is emitted by chemical and paper factories ,brick kilns ,refineries and smelting plants and burning of fossil fuels in big and small factories .Toxic gas leak of the Bhopal gas tragedy is still fresh in the minds of the people
Water pollution is caused by the organic and inorganic industrial water and affluents discharge into rivers .The main culprits in this regard are paper, pulp, chemical textile and dyeing ,petroleum refineries,Tanneries and electroplating Industries. Thermal pollution of water occurs when hot water from factories and thermal plants is drained into rivers and Ponds before cooling .
Waste from nuclear power plants ,Nucleus and weapon production facilities causes cancers,birth defects and miscarriage . Soil and water pollution are closely related Dumping of waste renders the soil useless .
Rain water percolates to the soil carrying the pollutants to the ground and the ground water also gets contaminated. Noise pollution results in irritation and anger . It also causes hearing impairment ,increases heart rate and blood pressure among other physicological effects .
Every litre of waste water discharged by our industry pollutes Eight times the quantity of fresh water. In the present scanario , pollution must be controlled, otherwise one day our planet earth will become so polluted that no life would be possible on earth .