Three undisturbed sediment layers contain stone tools. Layer X is below Y but above Z.
Table
| Layer | Tool |
|---|---|
| X | axe shaped on both sides |
| Y | thin blade with a finely worked edge |
| Z | pebble with a few flakes removed |
Which sequence shows the tools from oldest to youngest?
shaped axe, pebble, thin blade
pebble, thin blade, shaped axe
thin blade, shaped axe, pebble
pebble, shaped axe, thin blade
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.