>>96467767
Survival says strictly on Wilderness environment, while Streetwise is the opposite and Urban. Unless it's a wilderness environment within a city, you use Streetwise to gather information on the best place to get freebies. food banks, and junk that you can use to survive (and not get killed).
In fact, in EotE's sister game Genesys it literally says, "the Streetwise skill is your character’s ability to survive and thrive in rough and dangerous urban areas."
You can also use the expanded urban encounters like (pic).