in mt.moon
clefairy
Yes it evolves when you use a moonstone on it.
Moonstone makes pokemon evolve.
Yes.
In The Mt. Moonyou can find a moon stone in mt.moon it will be like a pokeball
use a moonstone on a nidorina. catch nidoran female or nidorina in safari zone
Moonstone
firered and leafgreen version
use that gameshark user.
Check Serbii. net
The emerald doesn't exist in firered.
No, Pokemon FireRed version is for GBA.