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...Geography optional test series online iasbaba schedule date of topics sources no geomorphology factors controlling by landform development endogenetic and savinder singh exogenetic forces origin evolution ch concepts the earth s crust fundamentals physical geomagnetism conditions interior geosynclines continental g c leong drift isostasy plate tectonics recent views geo on mountain building vulcanicity rupa earthquakes tsunamis publications geomorphic cycles landscape dynamic denudation chronology surface k channel morphology erosion surfaces siddhartha slope applied strahler geohydrology economic geology environment biogeography genesis soils classification distribution soil profile degradation conservation influencing world plants animals problems deforestation measures social forestry agro wild life major gene pool centers climatology temperature pressure belts heat budget www com page atmospheric circulation stability instability planetary local winds monsoons jet streams air masse...