Answer:
It looks like a simile is used, "dry as a biscuit,". It's comparing how dry something is to how dry a biscuit is.
I'm not sure about the rest, because I don't have context clues, but it looks like that's the only figurative language.
It sounds like a simile because it's comparing two completely different things but it also sounds like an analogy- a comparison between two things. but I'm thinking it's more of an analogy. hope I'm right good luck