The market-leading titles for IB Biology, available in both SL and HL editions. Key features: Thoroughly differentiated at both Standard and Higher Level Written in clear, accessible English for students whose first language is not English. Highly visual diagrams, photographs and topical examples to ensure students learn about the application of science in the real world. Contains worked examples, practice questions from past IB papers and advice on Internal Assessment and the Extended Essay for exam preparation. Free online learning resources, including interactive quizzes, revision exercises, worksheets and guidance on command terms.