Leatherjackets (the larvae of crane flies):
Give two abiotic factors and two biotic factors that could affect the size of a leatherjacket population.
Students investigated the population of leatherjackets in the soil of two different green spaces:
A mild liquid, Solution Y, can be poured onto the turf. This solution causes the larvae to rise to the surface of the soil within a few minutes but does not harm them.
Plan an investigation using Solution Y to compare the number of leatherjackets per m2\text{m}^2m2 in Site A and Site B.
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.