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Video 14-16, post 16 Video 11-14, 14-16, post 16 Ecosystems Levels of organisation within an ecosystem explain how some abiotic and biotic factors affect communities Practical 11-14, 14-16, post 16 9 9 describe the importance of interdependence and competition in a community Practical 11-14, 14-16, post 16 Practical 14-16, post 16 Resource Post 16 Practicals 14-16, post 16 9 9 The principle of material cycling explain the role of microorganisms in the cycling of materials through an ecosystem Pracical Post 16 Practical 7-11 9 9 explain the effects of factors such as temperature and content on rate of decomposition in aerobic and anaerobic environments Resource 7-11 Practical 7-11 9 evaluate the evidence for the impact of environmental changes on the distribution of organisms, with reference to water and atmospheric gases Resource 14-16, post 16 9 Pyramids of biomass and transfer describe the differences between the trophic levels of organisms within an ecosystem Practical 11-14, 14-16 Practical 7-11 9
SAPS%20for%20EDEXCEL%20GCSE%20specs.docx