E. Short Answer Type Questions
1. What is soil erosion?
2. What is humus?
3. What do you understand by percolation? How is percolation rate calculated?
4. When is soil said to be polluted?
3. A soil sample takes 45 minutes to percolate 900 mL of water. Find the percolation rate of it.
6. What is soil profile? Name different horizons of soil.
7. What are the various components of soil?
8. How is air present in the soil helpful for organisms?
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ans 1.Soil erosion is the displacement of the upper layer of soil; it is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice, snow, air, plants, animals, and humans.
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