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NCERT TELUGU-SOIL POLLUTION-EXERCISE
- Why do farmers add fertilizers to the soil?
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- What is pyrolysis?
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- What are the natural causes of land pollution?
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- What is no till farming?
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- A natural resource among the following is-
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- Natural medium on the surface of the earth in which plant grow is-
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- Mineral particles occupy-----% of the components of the soil-
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- Organic matter account to ----% of components of soil-
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- Soil formation can take ------- years to create one inch of topsoil-
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- The higher the quality of the soil, the ------is the quality of the cr...
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- The residues of dead plants, animals and organism is called-
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- Soils which contain 30% or more organic matter are considered-
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- Parent material is in the-
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- Layer of maximum biological activity is
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- importance of organic matter is that
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- the range of pH values of good soil is in between -
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- Below pH 7 the soil are termed as-
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- Above pH 7 soil is termed as-
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- Soil richer in organic matter is ----- in nature-
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- The availability of N, K, Ca, Mg and S tends to---- with decreasing pH
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