Do negative angles-of-attack create lift? (wikimedia.org) A typical curve showing section lift coefficient versus angle of attack for a cambered airfoil.

Based on the graph above, do negative angle-of-attack values create lift? How?
A symmetric airfoil will generate no lift at no angle of attack, and negative lift at a negative angle of attack. However, cambered airfoils are curved such that they will generate lift at small negative angles of attack.