The estimated ages of three fossils are shown.
Table
| Fossil | Possible age range / million years |
|---|---|
| P | 3.6 to 4.0 |
| Q | 3.8 to 4.2 |
| R | 2.8 to 3.2 |
Which conclusion is certain from these estimates?
R is younger than P and Q; the order of P and Q is uncertain
Q is older than P and R; the order of P and R is uncertain
P is younger than Q and R; the order of Q and R is uncertain
R is older than P and Q; the order of P and Q is uncertain
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.