Geograpphy Sec Sch

INTERNAL STRUCTURE OF THE EARTH

The internal structure of the earth is made up of three concentric layers which are (a) The crust (Lithosphere) (b) The mantle (Mesosphere) (c) The core (Barysphere)   The Crust This is subdivided into upper and lower crust. The upper crust consists of granite rocks and forms the continent. The main minerals here are silica […]

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