Waste water released from _________ are not the sources of bacteria
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The organic matter present in the water is of __________ types
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In which temperature soil develops slowly?
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Under ideal climatic conditions how many cms of soil is developed?
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What is called for the matured soils which are arranged in a series of zones?
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What is soil profile?
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How many horizons are there in soils?
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Which horizon helps to determine the pH of the soil?
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