Odum has described soil erosion as:

Related Mcqs:

1. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

2. According to Odum, the percentage of net primary production of total light intake is:

   A. 10%
   B. 0.15%
   C. 1%
   D. 1.50%

3. According to Odum the light absorbed by the plant cover in terms of kcal/m2/day is:

   A. 150
   B. 1,500
   C. 300
   D. 3,000

4. Odum did not recognise the following relationship as a positive interaction:

   A. Commensalism
   B. Protoco-operation
   C. Mutualism
   D. Antibiosis

5. The soil erosion on slopes proceeds in the following manner:

   A. Gully – Rill – ravine
   B. Rill – Ravine – Gully
   C. Rill – Gully – Ravine
   D. Ravine – Rill – Gully

6. Soil erosion in plains consequent to rain fall is initiated by:

   A. Rill erosion
   B. Sheet erosion
   C. Gully erosion
   D. All of these

7. Soil erosion is prevented by:

   A. Afforestation
   B. Deforestation
   C. Denudation
   D. Overgrazing

8. Soil erosion can be prevented by:

   A. Deforestation
   B. Heavy rains
   C. Afforestation
   D. Over grazing

9. Soil erosion can be reduced by:

   A. Reducing over grazing
   B. Planting proper plants
   C. Making dams
   D. All of those

10. Main indicator of soil erosion is:

    A. Deforestation
    B. Afforestation
    C. Ozone layer
    D. Goats and grazing animals