Due to industrialization, the waste chemical from the factories in the form of gases, liquids, solids are given out into the atmosphere, water and soil. When the collection of such chemical substances at any place increases beyond a certain level, the harmful effects can be seen . This is callee pollution. The contaminated water , dust, soot, chemicals, gases released in the atmosphere by the burning of carbon and sulphur, the harmful metals such as lead, aluminium, zinc, acids, bases cause pollution. The atmospheric pollution cause respiratory disorders, cancer of intestines, disorders of urinary bladder, high blood pressure, disorder of eyes etc . It leads to palpitations , breathlessness and psychological disorders. Pollution affects both animals and plants. To reduce pollution, efforts should be made to grow forests, treat chemical waste before letting out into the atmosphere, avoid the generation of harmful chemical substances, prevent the concentration of harmful chemicals at one place and industrial estates should be established away from cities.
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