you only can get them with cheats (i realy hate that with all that events and cheats =[ )
yes you can trade pokemon leafgreen pokemon to pokemon emerald version same as pokemon fire.
Emerald can trade with Leaf Green but not Pokemon Red
You cannot catch aipom in leafgreen however you can in emerald or Pokemon colosseum.
Using a GBA Link cable.
You must trade it from Pokemon firered or Pokemon leafgreen
Trade it from Ruby, Sapphire or Emerald version.
The emerald doesn't exist just the ruby and sapphire, to trade with emerald and leafgreen you need two wireless adapters.
No. It needs to be traded from ruby/sapphire/emerald
No
Yes you can trade leafgreen version Pokemon to another leafgreen version.
You cant. You need to trade it from Ruby, sapphire or emerald version.
Poliwag is not available in Pokémon Emerald Version. You must trade it from Pokémon FireRed or LeafGreen Versions. Over and out...