WHAT ARE WATER POLLUTANTS? 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 the i
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HOW DOES WATER GET POLLUTED? – CASE STUDY Ganga is one of the most famous rivers of India (Fig. 18.7). It sustains most of the northern, central and eastern Indian population. Millions of peo
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WHAT IS POTABLE WATER AND HOW IS WATER PURIFIED? Activity 18.7: * Let us construct a water filter with simple, everyday materials. * Take a plastic bottle an
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WHAT CAN BE DONE? Activity 18.8: * Investigate the level of awareness about water pollution in your area. * Collect data on the sources of drinking water a
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