A wood contains oak trees, caterpillars that eat oak leaves, and blue tits that eat the caterpillars. All of the oak trees in the wood are killed by a disease. Which change is most likely to happen in the wood?
The number of caterpillars rises, then the number of blue tits rises
The number of blue tits falls, then the number of caterpillars falls
The number of blue tits rises, then the number of caterpillars rises
The number of caterpillars falls, then the number of blue tits falls
63 exam-style questions on AQA GCSE Biology 7.1 Adaptations, interdependence and competition, covering 7.1.1 Communities, 7.1.2 Abiotic factors, 7.1.3 Biotic factors, and 7.1.4 Adaptations. Each one has a worked solution and a mark scheme showing where the marks go.