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Darwin and Wallace A new species Evidence of natural selection and evolution? 7.9 Key concept: Evolution: fitting the pieces of the jigsaw 7.10 Antimicrobial resistance 7.11 Combatting antimicrobial resistance 7.12 Selective breeding 7.13 Producing new plant varieties 7.14 Genetic engineering 7.15 Genetically modified crops: the science 7.16 Is genetic modification safe? 7.17 Ethically wrong, or essential? 7.18 Cloning 7.19 The tree of life 7.20 Extinction ... or survival? 7.21 Maths skills: Using charts and graphs to display data How to use these pages Marking grid Check your progress and worked example
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Investigating pollution Maintaining biodiversity Learning about food security Maintaining food security Using biotechnology Maths skills: Using graphs to show relationships How to use these pages Marking grid Check your progress and worked example
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Student Book answers Programme of study matching chart Using the student book to teach Combined Science: Trilogy
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8 Ecology in action Introduction 8.1 Key concept: Learning about ecosystems 8.2 Changing abiotic factors 8.3 Investigating predator-prey relationships 8.4 Looking at trophic levels 8.5 Transferring biomass 8.6 Competing for resources 8.7 Required practical: Measure the population size of a common species in a habitat 8.8 Adapting for survival in animals 8.9 Adapting for survival in plants 8.10 Cycling materials 8.11 Cycling carbon 8.12 Investigating decay 8.13 Required practical: Investigate the effect of temperature on the rate of decay of fresh milk by measuring pH change 8.14 Changing the environment 8.15 Learning about land use 8.16 Changing the landscape 8.17 Thinking about global warming 8.18 Looking at waste management
Collins GCSE Science
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