The evidence of "evolution" is simply what is used to back up the theory. As has been said, the evidence of its working isn't there. It's still a theory, and an incomplete theory.
That really isn't true. As a scientific theory (which is very different from normal usage of the word theory) evolution is pretty solid with an awful lot of evidence to back it up. It is in no way an incomplete theory. There is currently no evidence that disproves or sheds doubt on evolution.
Rubbish - evolution by natural selection has been observed in the lab - it's as proven as gravity!
You possibly need to choose a better example as gravity has quite a few problems and isn't fully understood scientifically. Newtonian Gravity is wrong at the really large end of the scale and Einstien isn't quite right at the very small end of the scale. Of all of the forces we are aware of gravity is one of the more mysterious.