If that question means how can you get your Pokemon from Sapphire to Leaf Green and vise-versa I have the answer.
You must first get the national dex in all games. Then trade ^_^ thas it!
gold teeth is not something you can obtain in sapphire only in firered and leafgreen.
you can not obtain the unown anywhere in the wild in Pokemon Sapphire. the only way is to trade it from Firered or Leafgreen
in leafgreen u have to get it from a Nintendo event and in sapphire after u get it in leafgreen u trade it from leafgreen to sapphire
Articuno is not available for capture in Sapphire you must trade it from Firered or Leafgreen to obtain it. Alternatively you can trade the purified one from XD Gale of Darkness.
no only on firered, Leafgreen, Heartgold, Soulsilver, Gold, and Silver. Well, you can obtain it by trading.
Unfortunately, you cannot catch Ditto anywhere in Pokemon Sapphire. To obtain Ditto, you must trade from Emerald. You could also trade from FireRed/LeafGreen
The only way to obtain sandshrew is to trade it from Leafgreen, Ruby, Sapphire or Emerald. It does not appear in FireRed, I think.
There is no mt.ember in sapphire n=but u'll find it in redfire &leafgreen u'll get molteres at mt.ember in redfire & leafgreen There is no mt.ember in sapphire n=but u'll find it in redfire &leafgreen u'll get molteres at mt.ember in redfire & leafgreen
It is no Ditto in sapphire but you can tradi it from Firered/Leafgreen
The sapphire orb is in ruby and sapphire, not firered and leafgreen.
You can't catch it in Pokemon Sapphire, Ruby, Emerald. The only way to obtain it is to buy it in the Game Corner for 9999 slot coins in Pokemon FireRed and LeafGreen and then trade it to your Ruby/Sapphire/Emerald game.
Charmander doesn't appear in the wild. You obtain it by beating the game, then migrate it from Pokémon FireRed, LeafGreen, Ruby, Sapphire, or Emerald.