endogenicandexogenicprocessjyjsujhjsujyujeyuyyy666666es-210131060134.pptx ii-17090404067478920000846u648523663550.pptx Genetic-Engineeringbgshthyjyghwtttttegtyggetv.pptx ORIGIN-AND-THE-SYSTEMS-OF-EARTH.bgbtshgvpptx PPT-ENERGY-SOURCE sggvstsbtbtsbbahS.pptx 
