In my opinion, I think using acronyms is very suitable for memorizing things in geography, and sometimes you don’t really have to come up with fancy acronyms. The acronyms may make sense at all like (HBN or VISE) but if you memorize these short acronyms for awhile they are really useful for the exams. For instance, I used HBN and VISE as two of my many acronyms I use for geography. They represent Health (H), loss of Biodiversity (B) and loss of Natural Species (N) as the disadvantages of GM food. Whereas for VISE, it represents nutritional Value (V), increase in Income (I), increase in Supply (S), and reduced Environment impact (E) as the benefits of GM Food. Notice that they all represent the keywords of the factors, so don’t include amorphous terms like Loss (L). It doesn’t represent clearly the loss of what. Of course, if you choose to use this tactic you have to be really clear with your factors. Most of the time, I realise that the understanding of the topic is there but the difficult part comes when you have to memorize the factors and keywords. For me, I think it’s rather effective because I forgot to memorize one of the key development chapter for my geography exam and I spent 30 minutes revising that chapter, which my teacher had only gone through once, and still managed to score well. I hope it works for you as well!