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/beh map reading relative location of ethiopia location of ethiopa the location of the horn shape of ethiopia size of ethiopia spatial analysis definition of geography relative and absolute age-dating technique shewan plateau chapter 3 gees1011 topography of ethiopia high lan tigray plateau north central massifs afar triangle borena lowland baro lowland abaydinder lowland south eastern ethiopian highlands western ethiopian highlands alfred wagner cenozoic paleozoic mesozoic precambrian period epoch era eon big bang geological time continental drift evolution of universe geology of ethiopia rift valley low land slideplayer.com/slide/18222432 slideplayer.com/slide/18222435 slideplayer.com/slide/18222434