People are mostly near the Nile river cause of the water and agriculture
Menzies Brisbane
because I looked up some websites and found that's it one of them or both
The sign would be blue with white lettering, such as
SERVICES 100m
or just
SERVICE
The correct answer is preening behavior.
Preening behavior or simply preening is described as a body language or series of unconscious/uncontrollable gestures between two persons, who are interacting, which signals attraction to each other.