Charles Darwin and Alfred Wallace developed the theory of evolution by natural selection in the 1850s.
Discuss why the theory was not accepted by many people at first and why it is accepted by scientists today.
44 exam-style questions on Edexcel GCSE Biology 4.1 Evolution and natural selection, covering 4.1.1 Work of Darwin and Wallace and 4.1.2 Resistant organisms and evolution. Each one has a worked solution and a mark scheme showing where the marks go.