Biology (Combined Science) · IGCSE · Edexcel · Pearson Edexcel International GCSE Science (Double Award) — Biology (Modular) — 4XSD1 · Specification point · 5.5 · Ecology and the environment · The organism in the environment
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| Learners should: |
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5.5 understand how abiotic and biotic factors affect the population size and distribution of organisms |