Raelle

if you want a timed practice, i think its better to consume DSE practice paper which is available in many boook stores

some topics in CE or AL may be out-sy which is not recommanded
however, CE n AL papers worth looking as we can learn more past examples and events
working on CE pp by topics is good but AL might be too difficult la
because the mark allocation of CE is similar/closer to DSE formate than that of AL

hope it helps

Raelle

and instead of  STONE
are you referring to Rock structure(plates/ continent component) or sediment/load types (coastal or river) or weathering of rock?