The diagram illustrates the development of Stone Age cutting tools, comparing
Tool
A from 1,4 Use synonyms
million
Use synonyms
years
ago with Use synonyms
Tool
B from 0,8 Use synonyms
million
Use synonyms
years
ago, shown from the front, side, Use synonyms
back
views.
Correct word choice
and back
Overall
, the Linking Words
later
Use the right word
latter
tool
appears noticeably more refined, symmetrical and sharper than its earlier counterpart, Use synonyms
although
both are of roughly similar length (5cm). The most significant changes related to improved shaping, smoother surface and thinner edges.
Linking Words
Tool
A, dating back 1,4 Use synonyms
million
Use synonyms
years
, has an irregular and relatively crude appearance. From the front and back views, its outline is uneven, with a broader middle section and a less clearly defined tip. The surface looks rough and chipped, suggesting limited craftsmanship. The side view indicates that the Use synonyms
tool
is comparatively thick, with blunt edges rather than sharp cutting sides.
Use synonyms
By contrast
, Linking Words
Tool
B, from 0,8 Use synonyms
million
Use synonyms
years
ago, demonstrates clear advancement. Its front and back views reveal a more symmetrical, tear-drop shape that Use synonyms
taper
gradually towards a Correct subject-verb agreement
tapers
point
tip. The edges appear sharper and more evenly flaked, Replace the word
pointed
while
the side view shows a thinner profile than Linking Words
Tool
A. These improvements suggest that Use synonyms
stone working
Use the right word
stone-working
-
techniques had become more sophisticated over time, resulting in a more efficient cutting instrument.Punctuation problem
apply