I could've chosen development but didn't feel that I could write 15 marks worth on types of aid so I plumped for water. Figure was hard because there was no clear LEDC/MEDC trend so I had to pretty much talk about all the bars which took a bit more time. Not sure about section b - I talked about low-tech water systems such as rainwater harvesting and filtering, you know, Wateraid type stuff, contrasting with dams and desalination as being effective but 'unsustainable' , but I wanted to get on so didn't really get to conclude.
Biodiversity, not bad, it's annoying when you learn a case study in depth and a typical question on it doesn't turn up - eg global ecosystem (coral reefs) so I adapted it by saying governments were a player, run the Marine park authority, etc??
Section B threw me off in the sense that the structure was odd, in most of the past papers I've seen its 12-14-14 but this was 12-10-16! Looking back I managed about 2 pages for part C but thinking about it there is quite a lot to talk about since quite a few of the figures have 2050 predictions, if you had time you could've thrown all of them in.
In the past its usually been around 65/90 for an A and 70 for A* (not much difference?) I wonder how much it will be this time? Lowest was 62 and highest 67.