Rattata will evolve at level 20.
It will evolve at level 20.
it evolves in lvl 28
it will evolve at lv. 20.
Rhydon is not able to evolve in FireRed.
Electabuzz is not able to evolve in FireRed.
You evolve it at level 20
areodactl does not evolve:-)
Golduck does not evolve.
Ghastly will evolve at level 20.
pidgeotto will evolve at level 36
level 26
Crobat doesn't evolve.