Answer:
Conservation of resources is essential because some resources like minerals are non-renewable, need conservation for future generations. Conservation is a judicious and careful management of resources by man as improper and overuse can deplete them leading to many ecological problems. Three methods of soil conservation are:
(i) Terrace farming: Cutting of hilly areas into steps to reduce the flow of running water. (ii) Strip cropping: Growing of crops in long strips. (iii) Planting of shelter belts: Shrubs and trees are planted along fields to control the force of wind. 
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