Water Pollution
In Class VII you learnt that water Is a precious resource. Think and list the various activities In which we need water. We saw that water Is becoming scarce due to Increase In population, industries and agricultural activities. You have also studied how water becomes “dirty" after we use it for washing clothes, bathing, etc. This means that we are adding some materials to the water, which spoil Its quality and change Its smell and colour. Whenever harmful substances such as sewage, toxic chemicals, slit, etc., get mixed with water, the water becomes polluted. The substances that pollute water are called water pollutants.
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Pollution of Air and Water - Notes
3. What can we do to reduce air pollution?
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4. What is Potable Water and How is Water Purified
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9. The Taj Mahal - Effect of Air and Water Pollution
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