Originally Posted by IntelSoldier
Remember this mnemonic: Leaves grow high on a tree, roots down low. Leafy vegetables (lettuce, cabbage) need high humidity, root vegetables (carrots) need low humidity.
ETA: IANABiologist but I think it has something to do with stomata. The more a food needs to aspirate, the higher the humidity needs to be. This is so that it doesn't lose moisture to the outside air, and vice versa.
Seconded. Alton Brown says to store carrots in sand in the fridge (IIRC - but maybe that was beets, another root vegetable), but less stout stuff like lettuce needs a somewhat humid environment (again, IIRC).
Foodie questions should go in CS, by the way. I know, you are asking a factual question, but that's where the foodies hang out.
Yes, I am aspiring to be a good one.