You can't unless you want to go to get Zapdos, Articuno, or Moltres.
Zapdos - Powerplant
Moltres - The Cave near island 1
Articuno - Seafoam island
Articuno is pretty hard to find the sea foam island while Zapdos and Moltres are much simpler*
you get to level 100 what else
There is a fire stone in the solaceon ruins.
you can go on the seivii islands 4 to 7
you can't =( *sorry*
the best fire Pokemon u could have to beat the elite 4 would be blaziken over level 75 or higher
Have a good Fire and/or Ground Type...
Yes, there are a few Ditto's in route 13, 14 and 15 (In Fuchsia, go to right).
No it is not possible.
After beating the Elite Four, go to a Pokemon Center and Trade a Charizard from Fire Red. you can get a Typhlosion by collecting 200 types of Pokemon then going to prof. birch :)
after beating the elite 4, it will be wild in the kanto region ONLY if u chose bulbasaur as ur starter pokemon.
Unfortunately, there are no Joto Pokemon in Ruby or Saphire. However after beating the elite four, they are available on Emerald, Fire Red, and Leaf Green.
There isn't a specific team for beating the Elite Four, but I would recommend having a fire-type, a flying-type, a dark-type, an ice-type and two more different types. To make sure you win, have all of these Pokemon at least Lv. 65. Expect the unexpected. . .