i suggest you make silly sentences to remover case studies and their facts
e.g.
HEDAZ to remember the zambia case study
H hydroelectric power
E expenses( it cost £500,000 to relocate people)
D dam (kariba dam)
A animals ( land used by dam=less land for animal farming)
Z zambia (an lidc)
also use the website Kerboodle ( you have to buy it but it’s amazing) also watch lots of documentaries on youtube. type in ur case study and watch all you can. it’s interesting and doesn’t feel like you’re learning but you are. whenever a question asks about the Effect something has, remember to comment on the farming land/food security, the habitats of animal, housing, dangers and costs. for example
global warming is making farm land infertile, therefore we grow less food and we are less food secure as a result. animal habitats are being lost meaning that animals will die and food chains will be disrupted. with rising tax, housing will become more scarce and expensive. more people are in danger of sunstroke in the summer and those on the coast are losing houses to flooded due to rise in sea level.
hope this helps, are there any specifics you need? x