Karst topography is a result of the dissolution of soluble rocks like limestone, dolomite and gypsum. Caves are formed due to weathering of rock deep underground. Cave or cavern is a natural void and is a space large enough so that a human can enter. The study of the formation and development of caves is called as Speleogenesis. Most of the formation of caves takes place in limestone rocks by dissolution.
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.
The force exerted on the surface by the column of air above it is called atmospheric pressure or air pressure. It is measured by means of an instrument called barometer.
Paper and pulp manufacturing are forest-based industries. The basic raw material for the pulp and paper industry isthe wood. Softwood of the temperate forests is especially suitable for making pulp and paper.
EXAMIANS