A stone hand axe is found in a layer of sediment.
Which measurement would provide the most useful evidence for its age?
the age of the rock originally used for the axe
the depth of the longest cut along the axe
the thickness of the widest part of the axe
the age of ash layers surrounding the sediment
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.