MT. Ember is a Volcano in the One island. You will need a Tri-Pass to get into the One Island.
You can get into the One Island and get the Tri-Pass by Defeating the 7th Gym Leader Blaine.
Bill will take you in there, and Celio will give you the pass
you cant go underwater in leafgreen!!
You can't go to Johto in Pokemon FireRed or LeafGreen.
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
go through victory road with all gym badges
All you have to do is go to Cinibar Island, and go into the Pokemon lab. One of the rooms will have someone called the wierd doctor. Just go up to him, and give him the fossil. Walk around a little, and once you come back, voila, you have your Pokemon.
you should go to gamestop
You have to go to Silph Co in Pokemon LeafGreen. You have to go there to get the Silph scope, which you need to advance.
First you have to get the tri-pass, second you have to go to one island and go over to the beach on the right and use surf, it will bring you to another section of the island, next go all the way up and use surf again and just go straight up and you can't miss it... you will need strength as well and bring ultraballs to catch moltres.
you cant go underwater in leafgreen!!
Watch leurois Pokemon leafgreen walk through part.
go to the Pokemon fan club and they will admire you.
Cinnabar island
Go to Cerulean Cave.
go sell it at gamestop
go and be a noob and you will eventually find out
go catch a POKEMON bring it on
You can't go to Johto in Pokemon FireRed or LeafGreen.