Question 2747

Read the passage carefully and answer the questions that follow. Soil is one of the most important natural resources on earth. Soils are essential for man to grow crops, get fodder and timber. Once the fertile portion of the earth's surface is lost, it is very difficult to replace it. In India, the destruction of the top-soil has already reached an alarming proportion. Land degradation problems have resulted in increasing depletion of the productivity of the basic land stock through nutrient deficiencies. In addition to the direct loss of crop producing capacity, soil erosion increases the destructiveness of floods and decreases the storage capacity of water in reservoirs. It is therefore essential that the soils should not be allowed to wash or blow-away more rapidly than they can be regenerated, their fertility should not be exhausted and their physical structure should remain suited to continued production of desired plant materials. Protection of land from further degradation, adoption of various conservation measures, including reclamation and scientific manage­ment of available land stock is very important for a country like India to achieve higher productivity of food, fodder, fuel and industrial raw materials on a substantial basis. Besides, demand for land for providing social priorities such as shelter, roads, industrial activities is increasing at a very fast rate with the rise in population and very often good agricultural and forest lands are being diverted to such use. It is, therefore, necessary to keep soil in place and in a state favourable to its highest productive capacity. Sheet movement of water causes sheet erosion and depends on the velocity and quantity of pronounced surface runoff and the erodability of the soil itself. In such cases, the soil is eroded as layers from the hill slopes, in an in­sidious manner. Sheet erosion is considered as dangerous as it may continue for years but may or may not leave any trace of the damage. Sheet erosion is common in the Himalayan foot­hills, Assam, Western ghats and Eastern ghats. According to the passage, Which of the following is popular for having sheet erosion?

Answer

Assam

Why?

It is clearly given that "Sheet erosion is common in the Himalayan foot­hills, in Assam". Thus option 2 is the correct answer.