The diagram compares the cuttiing tools used in 1.4 (A) and 0.8 (
B
) million years ago by illustrating their front, side, and back views.
Use synonyms
Overall
, the cutting tools did not evolve much in terms of size, evidenced by the fact that both tools had a height of approximately 9 centimeters. Linking Words
Conversely
, they had experienced significant transformations in various aspects Linking Words
such
as colour, shape, and sharpness over the 0.6-million-year period.
Speaking of colour, the Linking Words
tool
used in 1.4 million years ago displayed a darker shade comparing to the newer Use synonyms
tool
, which was in a brighter colour close to grey, indicating they were made of different materials. Shape-wise, by observing their front and back, Use synonyms
tool
A was carved into a triangle Use synonyms
while
Linking Words
B
had a diamond-like shape.
Turning to their effectiveness, it's notable that Use synonyms
tool
A was significantly thicker than Use synonyms
tool
Use synonyms
B
, with a width of 2 centimeters and a triangle-shaped side view. Use synonyms
In contrast
, Linking Words
Tool
Use synonyms
B
was polished to have sharper edges and needle-like ends, making it more productive in cutting activities.Use synonyms
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