No.
it cant learn it but you can teach it using the TM for solarbeam
Weepinbell didn't learn solarbeam.You must teach it with TM 22,which contains solarbeam
level 39 just after gastro acid
A typlosion can learn explsion
Dragonair does not learn Dragon Rush in Pokemon Leafgreen. However, it can learn the move in Pokemon Diamond, Pearl and Platinum at level 39.
learn how to spell.
All Pokemon with a water-type can learn it. There are some other Pokemon that can learn it, but mostly water-Pokemon.
It can't learn that move cause it doesn't exist in leafgreen.
he can learn zap cannon
the ferry at velmiron
Any ghost type Pokemon can learn it.
No, Butterfree cannot learn Fly.