following questions briefly. (100 points)

1. Discuss the principle of soil mapping in a soil survey.

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2. Discuss the Principles of Soil Classification.

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3. Explain the statement; ”Soils are natural three-dimensional bodies”.

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4. What is NCSS and make further discussion about it.

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5. Enumerate at least five (5) soil scientists or researchers and give their contribution on soil

survey and classification. (Do not include personnel named in this chapter in your answer.)​