write a short note on plains

Ingeography, aplain(pleyn) is a flat region. Some of them have been cradles of famous civilizations.

Plains occur aslowlandsand at the bottoms ofvalleysbut also onplateausoruplandsat highelevations. In a valley, a plain is enclosed on two sides but in other cases a plain may be delineated by a complete or partial ring of hills, by mountains or cliffs. Where a geological region contains more than one plain, they may be connected by a pass (sometime termed a gap). Plains may have been formed from flowinglava, deposited by water, ice cold wind, or formed byerosionby these agents from hills and mountains.

Plains in many areas are important foragriculturebecause where the soils were deposited assedimentsthey may be deep andfertile, and the flatness facilitates mechanization of crop production; or because they support grasslands which provide good grazing forlivestock, like cows, sheep, pigs and horses.