(a) What causes wind? (b) List any two methods of preventing soil erosion.

Monjur Alahi

(a) What causes wind?
(b) List any two methods of preventing soil erosion.


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Salim Ahmed Kawsar

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(a) The air above land gets heated faster and being light, it starts rising up. As the air rises, a region of low pressure is created. As a result, the air from the surrounding areas and from the top of the water bodies rushes into this area. The movement of air from one region to another creates wind.

(b) Soil erosion can be prevented by avoiding over-grazing, by constructing proper drainage canals around the fields.

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