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Section 4: Ecology and the Environment

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B2.1 Cells and Cell Structures
B1.8 Evolution
B1.7 Genetic Variation and Its Control
B1.6 Waste materials from plants and animals
B1.5 Energy and biomass in food chains
B1.4 Interdependence and Adaptation
B1.3 The Use and Abuse of Drugs
B1.2 Nerves and Hormones
B1.1.2 Infectious Disease

Question 6
Question 4
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Identifying sources of error
Drawing conclusions and interpreting data
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B6: Brain and Mind
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B3: Life on Earth
B2: Keeping Healthy
B1: You and Your Genes
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