im guessing u mean haunter, and u must trade it to evolve it into gengar, which sucks if u dont have anyone to trade with, or are playing a rom.
you can't
ditto does not evolve on firered or leafgreen
That item doesn't exist in leafgreen.
It will evolve at level 7.
40
you can't
You need to trade it to another game to evolve it, it's okay if you trade it back afterwards.
You can't evolve Yanma in Leafgreen. This is because Leafgreen was made before Yanmega was made. So basically in Leafgreen, Yanma is a Pokemon that can't evolve.
you cannot evolve a porygon2 in leafgreen
Piloswine does not evolve in LeafGreen. It didn't get an evolution until Diamond/Pearl/Platinum, which came out after LeafGreen.
You can't on leafgreen.
you have to trade with a person his hunter with you then he will evolve
he has to be lv 40, then he will evolve.
It must be traded to evolve.
No.
No.
Mamoswine doesn't evolve either way because it doesn't exist in Pokemon LeafGreen. It evolves from Piloswine who evolves from Swinub, but Piloswine can't evolve into Mamoswine in LeafGreen.