A. Pan breaking
B. Levelling
C. Ridge terracing
D. All of these
Related Mcqs:
- The pollutants like phenol, Na and Hg can be removed from water by technique/s such as:
A. Reverse osmosis
B. Electrodialysis
C. Both (a) & (b)
D. None of these - The classes of trees are removed in selection thinning:
A. They are restricting the development of their neighbours on all sides
B. They are less valuable than their neighbours
C. They are of no special importance with regard to desirable species mixture
D. All of the above - The major types of vegetation removed is:
A. There is no need to eliminate any plant that is not going to suppress, endanger
B. Or hamper the growth of a distinctly desirable member of the new stand
C. Both (a) & (b)
D. None of these - The most common method used for cultivation on hills:
A. Levelling
B. Ridge terracing
C. Bench terracing
D. Channel terracing - 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 - If the same crop is repeatedly grown in a field:
A. Nitrogen starvation many result
B. Specific mineral deficiency may arise
C. Soil will become prone to diseases
D. Water level in soil will recede - To prevent wind and water erosion, the crop is sometimes harvested in such a way that a basal stub of the plant is left behind. This phenomenon is called:
A. Ley farming
B. Mulching
C. Basin listing
D. Strip cropping - Which of the following plants is used as windbreak?
A. Delonix
B. Mangifera
C. Eucalyptus
D. Prosopis - The ecological equilibrium in mined areas can be achieved by:
A. Preventing soil erosion
B. Developing a vegetational cover
C. Preventing overgrazing
D. Introducing agriculture - Which is the main causative factor for desertification?
A. Irrigated agriculture
B. Overgrazing
C. Tourism
D. Developmental activities
The correct answer to the question: "Gullies are removed by:" is "Levelling".
