Which statement describes a species that has become extinct?
The number of individuals in the species has fallen by more than half
The species now lives in only one small area of its original habitat
There are no individuals of that species left alive anywhere on Earth
The species can no longer breed with a closely related second species
40 exam-style questions on AQA GCSE Biology 6.3 The development of understanding of genetics and evolution, covering 6.3.1 Theory of evolution, 6.3.2 Speciation, 6.3.3 The understanding of genetics, 6.3.4 Evidence for evolution, 6.3.5 Fossils, 6.3.6 Extinction, and 6.3.7 Resistant bacteria. Each one has a worked solution and a mark scheme showing where the marks go.