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The image displays two diagrams featuring primitive tools labeled Tool A and Tool B, each presented with three distinct perspectives comprising front view, side view, and back view with a 5cm scale. Tool A, dating back 1.4 million years ago, showcases an asymmetric design with a broad, uneven base narrowing towards a jagged peak. Tool B, originating from 0.8 million years ago, exhibits a refined, symmetrical teardrop shape with a pointed top and a broader, smoother base.
Given the complexity of the image, the above description may not be entirely accurate.
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The diagram illustrates/demonstrates/depicts how two cutting tools were refined in the Stone Age. Overall, the noticeable difference of these tools in two periods are the sizes and the sharpness, with the version in 0.8 million years ago being bigger and taper than the version in 1,4 million years ago.
1,4 million years ago, tool A was thin, measured around 8 centimeters in length. The front view and the back view were uneven/different in appearance. The surface was not flattened/rough.
6 hundred thousand years later, tool B became more significantly advanced, which was larger than tool A and measured approximately 10 centimeters in length. The shape of the tool was a raindrop, which had a big bottom and pointed top. Both front and back sides were evenly round and smooth.
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