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GCSE Exam GCSE Synergy Biology
4.4.1.1 Development of the Earth’s atmosphere
4.4.1.2 The carbon cycle
4.4.1.3 The greenhouse effect
4.4.1.4 Human impacts on the climate
4.4.1.5 Climate change: impacts and mitigation
4.4.1.6 Pollutants that affect air quality
4.4.1.7 The water cycle
4.4.1.8 Sources of potable water
4.4.2.1 Levels of organisation in an ecosystem
4.4.2.2 Interdependence and competition
4.4.2.3 Factors that affect communities
4.4.2.4 Field investigations
4.4.2.5 Biodiversity
4.4.2.6 Negative human impacts on ecosystems
4.4.3.1 Chromosomes and genes
4.4.3.2 Sex determination in humans
4.4.3.3 Single gene inheritance
4.4.3.4 Genotype and phenotype
4.4.4.1 Mutations
4.4.4.2 Evolution through natural selection
4.4.4.3 Evidence for evolution
4.4.4.4 Identification and classification of living things
4.4.4.5 Selective breeding
4.4.4.6 Genetic engineering