The Warden gives it to you after you find his teeth in the Safari Zone. His house is at the bottom of Fuschia City.
in the bum
Strength will activate when you get the RainbowBadge.
use strength
Cut, Fly, Surf, Strength, Flash.
by getting gold teeth in safari zone then take it to the warden at his house and he gives you strenghth
in Pokemon yellow there is no Pokemon stadium
To my knowledge i don't think there is a waterfall in Pokemon yellow and it is quite irrelevant to the storline if there was one. If you mean a HM named waterfall...i think your on the wrong game, only pearl and diamond have waterfall HM...i think. There are only 5 HM's in Pokemon Yellow Flash, Cut, Fly, Surf, Strength.
on Pokemon yellow on Pokemon yellow
No. They were made after Pokemon Yellow.
There is no Pokemon Spark Yellow game.
No, you cannot get Lugia on Pokemon Yellow.
Yes you can trade Pokémon between two Pokémon Yellow games.