Social Science 3 Marks Each

Major remedies to prevent soil erosion are as follows:

• The grazing activity over the land should be controlled.
• Sowing should be done in contour-like formation over the sloppy land.
• Trees should be planted over the fallow land.
• Check dams should be constructed where depressions have developed due to running water.
• Deep ploughing should be carried out to slow down the flow of the water.
• Bunds should be constructed around the farms to prevent sheet erosion and tree plantation should be carried out. These bunds obstruct the soil of the farm from flowing out.

• Soil conservation refers to the prevention of soil erosion and to maintain its quality.
• The most important aspect of soil conservation is to retain the soil particles at their original place.

• The roots of the forest cover hold up the soil particles.So, more trees should be planted.
• Plant trees in the rivers gorges and on mountain slopes.
• A series of trees should be grown near a desert region to prevent the winds with more velocity. It will stop the advancing desert.
• The river floods should be controlled by diverting their flow in other rivers or in dry river beds.
• Unrestricted grazing loosens the soil layer on the mountains. Hence, it should be prevented.
• Methods like horizontal cultivation, terraced farms, etc. should be implemented.
• Humus content should be added to the soil whose fertility is lost.
• Government, society and the people should work together for soil conservation.

1. National resources : It is one of the type of resources classified on the basis of ownership. Resources owned by a country or a region are called national resources e.g., army, international trade.
2. Conservation of resources : The proper management for the restrained and proper usage of resources is called the conservation of resources.
3. Soil conservation : Soil conservation means to prevent the soil erosion and to maintain the quality of the soil.

1. Soil conservation : Soil conservation means to prevent the soil erosion and to maintain the quality of the soil.
2. Rare resources : Rare resources is a type on the basis of distribution. The resources, those available at limited places, are called Rare resources. For e.g., minerals like coal, petroleum, copper, gold, uranium, etc.
3. Solitary resources : Minerals which are available only at one or two places in the world are called 'Solitary resources'. e.g., cryolite, which is available only in Greenland.

1. Non-renewable resources : Those resources which are used once but cannot be obtained or regenerated are called Non-renewable resources, e.g., minerals.
2. Soil : Soil is a thin layer on the surface of the earth which is composed of many smaller particles and minerals, humidity, humus, air, etc. are mixed within it.
3. Soil erosion : Soil erosion means the transportation of small soil particles from one place to another by the natural forces like running water and wind.

1. Resources : The thing on which the man is dependent, human needs can be fulfilled by them and the man has the physical and intellectual capability to utilise them can be called a resource. When anything is used to fulfil the needs of human being, it becomes a resource.
2. Conservation of resources : The proper management for the restrained and proper usage of resources is called the conservation of resources.
3. Renewable resources : Those resources which re-generate their used portion themselves within a stipulated time are called Renewable resources, e.g., solar insolation.

• When land particles get transferred from one place to another due to fast moving air i.e wind and water it is called soil erosin.
• It takes many yers to form the upper layer of soil.
• When this top layer of soil erodes due to heavy rain or by stormy wind, the agricultural production on that soil decreases.
• Hence, it is extremely important to check that the soil erode.

• Control grazing activity on the land
• Plantation should be carried out in contour method in sloppy regions
• Trees should be planted in fallow land
• Construct check dams on streams
• To reduce the speed of the water cultivation should be done very deeply in the fileds.

• They should be saved for future generations so we need to conserve them.

• These steps can be undertaken to conserve resources:
• Information must be collected about the availability of unutilized and probable resources of the country, state or region.
• The resources which are limited or non-renewable should be rationally used to see that they are not exhausted.
• Attempts should be made to develop those resources whose quantity can be increased.