Soil

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1. Suppose for a certain sample of soil it took 20 minutes for 200 ml water to percolate.The rate of percolation of water is

2. Apparently looking dry soil contains some amount of

3. Continuously soils are disadvantageous for plant growth.

4. Property of soil to retain water is called

5. The removal of land surface by water, wind or ice is known as

6. Soil is formed by of rocks.

7. A dark soil is usually rich in or

8. The physiochemically active portion of the soil is

9. Soil erosion can be stopped by

10. is a section through different layers of the soil.