Karst topography is a result of the dissolution of soluble rocks like limestone, dolomite and gypsum.Cenote is a natural pit or a sinkhole which results from the collapse of a limestone bedrock exposing the groundwater underneath. Cenotes are commonly found in low-lying areas like islands, coastlines, etc.
The Stratosphere is the layer of the Earth’s atmosphere which lies beyond the troposphere. It extends up to an altitude of 50 kilometres from the earth’s surface. This layer is almost free from clouds and associated weather phenomenon. It therefore makes conditions most ideal for flying aeroplanes.
EXAMIANS