A stone tool lies between two undisturbed ash layers. The upper layer is 0.8 million years old and the lower layer is 1.2 million years old.
Which pair of proposed ages are both possible for the tool?
0.7 million years and 0.9 million years
0.9 million years and 1.1 million years
0.7 million years and 1.3 million years
1.1 million years and 1.3 million years
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.