Hey,
I agree. I do chemistry and biology and I prefer them much more to geography. However, I think it's most important to address the point they are asking.
For example, the first one is "biophysical interactions that lead to diverse ecosystems and their functioning". To address this, there are two parts. One - biophysical interactions (atmosphere, hydrosphere, lithosphere, biosphere, as well as weather/climate, geomorphic/hydrologic processes, biogeographical processes and adjustments in response to natural stress) that lead to diverse ecosystems, like the variety of ecosystems with different levels of complexity and scale, and two - ecosystem functioning, how ecosystems work like food webs, trophic interactions, productivity, nutrient cycling etc.
Summarise it and an example or two are helpful for each part. Definitions and use of appropriate terminology is also a good thing to do.
Just go through systematically and address each part. Like some have several parts to a dot point like "the relationship of dominance and dependence between world cities and other urban centres and the changing role of regional centres and the demise of the small town."
This involves the relationships of dominance and dependence between world cities and other urban centres (this is a number in itself, but it falls as one), then there's the changing role of regional centres, and there is the demise of the small town.
Finally, it's important to go through the syllabus and 2001, 2002 and 2003 extended response questions to find the ones tested already.
I think the ones that could be tested for ecosystems at risk include:
- H1 + H2 + H5 + H6
- vulnerability and resilience of ecosystems
- traditional and contemporary management strategies
- biophysical interactions
- human impacts
Know the case studies.
I think the people and economic activity question will be a long doozy of a question, whilst urban places might compare megacities and world cities, urban dynamics or a case study of an urban dynamic.
They can just ask one of the outcomes as a question. Remember the skills listed like weather maps, precis maps etc. are tested so go over them.