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This international edition of the widely-used textbook GCSE Biolog provides up-to-date and comprehensive coverage of the core and supplementary topics specified in the IGCSE Biology syllabus. In particular: — there is additional information on topics such as clinical trials, B and T lymphocytes, infertility, performance-enhancing hormones, fluoridation of water supplies, impact of hunting and over fishing, global warming, biofuels and global travel and disease — a new chapter on applied genetics draws together and expands the information on selective breeding, genetic engineering, cloning, genetic fingerprinting and the human genome project — a new chapter on conservation covers extinction, conservation of species, conservation of genes, conservation of habitats, and conservation of resources — a revised chapter on ecosystems includes information on adaptations and factors which affect communities — a new chapter addresses the development of biological ideas and the principal contributors to these ideas, from Galen to Watson to Crick — a new final chapter on observation and experiment looks at the type of questions that can be investigated scientifically and the nature of evidence — and past examination questions have been updated.
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