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Class 9Shaping of the Earth’s Surface— NCERT Social Science, Chapter 2. The Earth's surface keeps changing under forces from within and from above. Inside, the Earth has a crust, a thick and mostly solid mantle and a metallic core; the…
Class 11Interior of the Earth— NCERT Geography, Chapter 3. Nobody can reach the earth's interior, so we know it from direct evidence (mines, deep drilling, volcanic material) and indirect evidence (temperature, pressure and…
Class 11Distribution of Oceans and Continents— NCERT Geography, Chapter 4. Continents (29% of the surface) and oceans have not always been where they are. Wegener's continental drift theory (1912) said one supercontinent, Pangaea, ringed by…
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