NO
You can't. You only get one without trading it from another Pokemon game.
You cant.
Not without trading from another game.
Not without trading from another game or using cheats.
Not without AR or trading it from another game.
You can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
you can't you can, but only by trading all your Pokemon to another game before restarting, then trading them back after you have gained the ability to.
It is impossible to obtain a Mew in Pokemon Emerald outside of Nintendo events without cheating or trading from another game.
to move a pokemon from one game to the other without trading
You can't, it doesn't occur naturally in the game.
Not without trading from a 3rd gen game.
it depends on how many Pokemon are in the game to start with