6.5band
thyuuhjuikjiopl; . [p; '/oikjuhyuthtrfewsdfghjkn gyhhgbv gtyhjm nfrdvgbhn jgd yhtkg gfyuf htr The layout illustrates the changes done in a cutting tool within 1. 3 million years ago. We can see the front, back, and side views in the diagram of the cutting tool. Overall, In tools from 1. 4 million years ago, there was no sharp edge and, in tools from 800 thousand years ago, sharp edges observ...