Hot answers tagged preguntas
You should go with "las", not "les". I'm not much of a grammar guy, but here "les" means "to them", not "them", so it sounds like the floods themselves are suffering or being affected (in a kind of personal way, if that makes sense). "El cambio climático las empeora" or "El cambio climático las está empeorando" look fine to me.
Only top voted, non community-wiki answers of a minimum length are eligible