Complete new 2027-2029 IGCSE Unit 6 PowerPoints: packed with retrieval tasks, exam questions, inquiry-based activities,** case studies**, and exemplar answers to boost understanding and exam success. Includes: 3 Powerpoints - 6.1 Populations grow and decline 6.2 Population structures change over time 6.3 The causes and impacts of international migration Germany MIgration strategy case study