click on the pokeball in front of you and it should be an item
You can only breed pokemon, not items. Items aren't alive!
dont care
there are a few items , but the Pokemon SMEARGLE is inside
You can't duplicate items unless you use a gameshark
you can't get jirachi in emerald, only by Nintendo events, they give out special items that helps you get rare Pokemon.
YES, duplicating Pokemon and items, going to moon etc
Some of them contain items.
As far as I know there is no code for key items.
Google: How to clone pokemon in pokemon emerald. Be warned, this may ruin the fun for you, and it does work. Be very very careful. Think of it as a last resort, once you have had all the fun you can in emerald, then use this cheat.
Buy the map of Asia
Yes,all misc. items.
You Can't. only in emerald can you clone stuff.