Fossilised hominin footprints are preserved on an ancient mud surface. The rock sequence is undisturbed.
Ash layer P, immediately below the mud surface, is 3.8 million years old. Ash layer Q, immediately above the mud surface, is 3.5 million years old.
A museum label states that the footprints are 3.4 million years old.
Which statement about the museum label is correct?
The label could be correct, because the footprints are younger than layer P.
The label is incorrect, because the footprints are 3.5 to 3.8 million years old.
The label could be correct, because sediment below layer Q formed after layer Q.
The label is incorrect, because the footprints must be older than 3.8 million years.
45 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.