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4.2 Evidence for evolution and classification

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Question 4

Scientists excavate an ancient lake basin and find a stone chopper in sediment between two layers of volcanic ash.

Ash layerPosition relative to the toolAge / million years
Pabove the tool1.4
Qbelow the tool1.9

A filled animal burrow crosses ash layer P and reaches the sediment containing the tool.

Explain the age range that the position of the tool would suggest and why scientists should not consider this range reliable.

[3]
Markscheme

4.2 Evidence for evolution and classification Questions

  1. GCSE
  2. /Biology
  3. /4.2 Evidence for evolution and classification

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.

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