Scientists compare stone tools from different periods.
Which change is generally found in the more recent tools?
more rounded and unworked surfaces
fewer deliberately removed stone flakes
more carefully shaped cutting edges
fewer types of specialised tool shapes
40 exam-style questions on Edexcel GCSE Biology 4.2 Evidence for evolution and classification, covering 4.2.1 Fossil evidence for human evolution, 4.2.2 Stone tool evidence for human evolution, 4.2.3 Pentadactyl limb as evidence, and 4.2.4 Three domains classification. Each one has a worked solution and a mark scheme showing where the marks go.