not that i know off. I'm pretty sure there aren't any.
You can catch one at Stark Mountain (: and if your not finding any catch a male and female Magcargo and breed them
Any
you have to climb stark mountain and fight him, if you have your master ball it is worth using as he is hard to catch any other way
No, Mt. Stark is the last side-plot.
yes there are Pokemon centers
In Pokemon diamond and pearl after you capture Giratina from Turnback cave you can capture Cresselia- after seeing it on Fullmoon island and Heatran- from stark mountain, and if there are any others I have not discovered them yet. I'll keep you posted! Glad to answer your question!
dunno search serebii.net but to get magby put leaf green in the GBA slot and got to the route under stark mountain 227 and search there for a while
No
You can get them any where with a poke radar but if you don't want to use a poke radar i think you should go to route 225, 226, 227, 228, 229 230, and stark mountain. (P.S. you can catch rare Pokemon and shnies with a poke radar).
You cant battle them any more you have almost beaten the game..........
Light Mountain is not an existing location in Pokemon FireRed. Light Mountain doesn't exist in any other Pokemon media including the movies and comics.
Go to your bag and use the poke-radar any time you are in tall grass. Several patches should shake. Go to one and a Pokemon will show up. Usually the Pokemon you find are the ones that are normally found there, but sometimes new Pokemon show up. Most routes have one Pokemon that can't be obtained without it, but it doesn't work in caves or on water.