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I've gone through the past papers from 2019 onwards and to me they seem like the most likely. Last year was eco processes and dynamic equilibria and that won't come up again. It seems very likely that both the essays will be on second year content. Circular economy was only on the specimen paper and not a real exam so they might just reword the question slightly idk. Agricultural methods to reduce env impacts for the second option maybe? The rest will probably be everything in living and bio resources and tbh who knows what the 9 marker could be, they could test anything. But yeah they're my predictions. Honestly just go through everything that is explained over 2 pages or more in the textbook, usually, that's what they ask for essays lol.