The Galactic Key is a reusable item. Use it to death and it'll still be there.
No, you can't. TM's can only be used once.
Get a team that can win once; they will only get better as you defeat the league again and again.
I don't think you can because Pokemon Diamond didn't have the new Pokemon that only appear in the Unova region. But, once you have completed the Pokemon League on Pokemon Black/White you can go to a science lab in route 15 and transfer Pokemon from Pokemon Diamond/Pearl, Pokemon Platinum, Pokemon Heart Gold/Soul Silver to your game.
The only way to obtain it is to trade it from Diamond, Pearl, or Platinum. Once you have it in you game, you can breed it.
I'm sorry to say but no. Only migrate to diamond if your willing to no longer have it on emerald. If you do migrate it to diamond and want it back, you must use a cheat, trade or restart the game.
No, you can't. TM's can only be used once.
No. In Pokemon Diamond you can only catch Dialga once but you MIGHT have a second chance after beating the Pokemon League at least once.
The Torn World cannot be acsessed from Pokemon Diamond and Pearl. It can only be acsessed in Pokemon Platinum after defeating Galactic Boss Cyrus once.
No. The ONLY way to get Pokemon from Pokemon firered is migrating.Go to Pal Park once you have completed the game to migrate.
do it at the plce where you walk your Pokemon only cute ones though and check them once in a while
That pokemon does not exist in emerald it only became available once diamond and pearl came out it only is available in those games along with platinum.
Get a team that can win once; they will only get better as you defeat the league again and again.
Only by trading from Diamond. In Pokemon Pearl you get Palkia and in Pokemon Diamond you get Dialga.
there is only the sinnon region is Pokemon diamond
You can't get Palkia in Pokemon Diamond only by trade.
There is only one region in Pokemon diamond.
I don't think you can because Pokemon Diamond didn't have the new Pokemon that only appear in the Unova region. But, once you have completed the Pokemon League on Pokemon Black/White you can go to a science lab in route 15 and transfer Pokemon from Pokemon Diamond/Pearl, Pokemon Platinum, Pokemon Heart Gold/Soul Silver to your game.