4a) Using examples, explain how human activities can modify climates at regional to global scales. OR: 4b) Why is it important to understand the inter-relationships between climate and vegetation? Outline and explain primary differences between river systems in Aotearoa New Zealand and Australia. 2 Answer EITHER: 2a) How do endogenic and exogenic processes influence each other? OR: 2b) How and why is the catchment the critical scale for scientifically-informed approaches to river management?