You can if you use action replay :P
If you don't use one, then it is impossible to complete without trading as there are only certain Pokemon that can be caught in diamond and vice versa with diamond.
You can complete the pokedex on Pokemon Blue version by trading with you friend who has Pokemon Red version. Or you could do what I do and get two gameboy color's and multiple Pokemon games because none of my friends play Pokemon anyomore; even though it is one of the best games of all time =).
you have to get 150 different types of Pokemon
No.
get all through evolving, catching, training, trading, and through events. It was actually impossible to complete the national pokedex until arceus and the jewel of life. from that moment onward, several unobtainable pokemon were given during events
Utilize: global trading, pal park, cartidges, and your poke radar. (or a code which i do not have)
U Will Need Gameshark Codes To Complete The Pokedex In Pokemon Emerald.
it is not possible to get them without evolving or trading.
complete the pokedex by trading from other games or travelling to other places
You have to complete your pokedex the oak gives you a call
It's impossible to complete the pokedex in a couple minutes without cheating you have to do alot of training, trading and breeding which takes hours of work.
You can complete the pokedex on Pokemon Blue version by trading with you friend who has Pokemon Red version. Or you could do what I do and get two gameboy color's and multiple Pokemon games because none of my friends play Pokemon anyomore; even though it is one of the best games of all time =).
You go round all of sinnoh and see every pokemon. It is easy to complete but will take a long time. You will not be able top catch them all without trading but you can complete it without trading
too bad.trade it.
Pokemon Emerald 386 is a hacked version of Pokemon Emerald that allows you to complete the pokedex without trading and/or hacking. It's a ROM that can be played on a VBA. You can get it at 4shared.com.
you have to get 150 different types of Pokemon
No.
By trading and mixing records with other gamers, going to Nintendo Events and getting Pokemon there, and by hunting down ones which are findable in game.