Q. According to NRGBA which is the national river of India?

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Q. Which is the Longest River in India?

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Q. Which is the most polluted river in India?

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Q. All the rivers in India are female.

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Q. In which temperature soil develops slowly?

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Q. Under ideal climatic conditions how many cms of soil is developed?

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Q. What is called for the matured soils which are arranged in a series of zones?

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Q. What is soil profile?

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Q. How many horizons are there in soils?

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Q. A–horizon soil consists of partially decomposed organic matter.

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Q. Which horizon helps to determine the pH of the soil?

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Q. What is called for the mixture of all the contents of soil?

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Q. Why area treatment is important for soil?

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Q. What is called for the movement of surface litter and topsoil from one place to another?

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Q. Why continuous contour trenches are used?

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Q. What is used to convert wastelands into agricultural lands?

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Q. Organic agriculture advocates avoiding the use of_____________________

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Q. Integrated pest management reduces the excess use of fertilizers.

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Q. Which is the most input of waste causing marine pollution?

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Q. Why ship accidents cause marine pollution?

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