give a Pokemon a ambulet coin and fight a lot of trainers u should get alot
A Lot
by selling items or battling trainers
by selling items and battling trainers
You'll find a lot of magnemites and voltorbs.
Pokemon ruby's version IS Pokemon ruby.
There's many kanto Pokemon in ruby not a whole lot but there's a select few you can capture like rhyhorn, oddish, gloom and many more.
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
Probably but it would take a lot of time
walking a lot of steps like 11000000 steps
well you can make a Pokemon hold a master ball and clone Pokemon
The Pokerus I believe appears only in 4th Generation. If it does exist, then you'll need to battle a lot and lot of wild Pokemon. All it takes is a lot of luck!
ruby