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The diagram illustrates how the cutting tool during the period from 1 million years ago to 0 million years ago in the Stone Age evaluated. It can be seen that a number of updates in the shape and size of the tool so that it could become a more effective cutting instrument.1 years million ago, the to...

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The diagram illustrates how the cutting tool during the period from 1.4 million years ago to 0.8 million years ago in the Stone Age evaluated. It can be seen that a number of updates in the shape and size of the tool so that it could become a more effective cutting instrument. 1.4 years million ago, the tool was relatively primitive and resemble a natural stone. From the front and side view, the tool A had an oval shape, rough surface and bunt edges, which reflected the less inferior version to tool B. After 0.6 million years, cutting tool was upgraded into the spear- shape instrument with the edges and tips being much shaper, which suggests that it is better crafted than the past. While the long of tool B was 10 centimeters- the same length as tool A, the surface of tool B was crafted to be smoother and the overall width to be lager. Therefore, these features rendered this version more superior in terms of cutting efficiency.

The diagram illustrates how the cutting tool during the period from 1.4 to 0.8 million years ago in the Stone Age evaluated. It can be seen that, the tools were changed in shape and size, so that it could become to be a better cutting instrument in the development of human.

1.4 million years ago, the tool was relatively primitive and resemble to a natural stone. It had an oval shape, rough surface and blunt edges which reflected an inferior version to tool B. After 0.6 years million, these features was upgraded into a spear-shape with the shaper tip and edges, which suggests that it had been better crafted than it before. From the front and side view, The surface of tool B was crafted to be smoother and the overall width to be larger. Therefore, the tools render this version more superior in terms of cutting efficiency.

The diagram illustrates how the cutting tool during the period from 1.4 to 0.8 million years ago in the Stone Age evaluated. It can be seen that the tool (a number of upgrades were made in) was upgraded in shape and size so that it could become a more efficient cutting instrument. 1.4 million years ago, the tool A was primitive and resembled to a natural stone,(which suggests that little crafting was done). It had an oval shape, rough surface and blunt edges, (hence presumably the inferior version) which was inferior version compared to tool B.

After 0.6 Million years later, tool B was seemly crafted was upgraded into to a spear-shape instrument with From front and side view, the tip and edges were being much sharper than it before, which suggests that it was better crafted than tool A. The surface of tool B was crafted to be smoothed and the overall width to be larger. So that, these features rendered the tool efficient (this version more superior in terms of cutting efficiency ) to become a better cutting tool in the development of human....