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Soil S T L - NCERT

products, chemicals and pesticides. Waste products and chemicals should be treated before they are released into the soil. The use of pesticides should be minimised. I have seen pots and toys made up of soil in haat (bazaar) Fig. 9.2 Layers of soil I wonder why I found some pieces of plastic articles and polythene bags in the soil sample

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  Chemical, Soil

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