Which statement describes evolution?
a change in the features of one organism during its lifetime
a change in the inherited characteristics of a population over time
a change in the number of organisms in a population each year
a change in the environment that makes some species die out
122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.