Karst landforms are a type of topography formed due to dissolution of soluble rocks like limestone, dolomite and gypsum.Poljes also called as karst fields or karst polje are large flat plains found in karst regions. The word Polje means ‘field’. They are flat floored depression within karst limestone.
The South China Sea is a marginal sea of the Western Pacific Ocean. It is the biggest sea by size. It is bounded in the north by the shores of South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan.
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