No.
You cannot get the Legendary Dogs (or Beasts such as Raikou, Suicune and Entei) in Ruby without either trading for them or cheating for them because they are not available in the wild in Ruby in any way, shape or form. But you can catch it in Pokemon Ruby Destiny-Reign of Legends. But in the original Ruby or Sapphire you can't get it.
Yes, you can breed any Pokemon on any of the Pokemon games, except the legendary Pokemon.
I don't think you can refight any legendary Pokemon except the wandering dogs.
Groudon is a rare legendary Pokemon, which is very hard to find. Since Groudon is so legendary, fortunately he does not evolve in any Pokemon Game or Series (nor does anything evolve into him). He's just a standard rare Pokemon like the others.
i cannot answer the question - wich legendary Pokemon evolve? but i can answer the question - do any legendary Pokemon evolve - and the answer is... no!
The rerest legendary Pokemon in any of the games is mew and arceus
you cannot breed any legendary Pokemon
You can't go to the moon in any Pokemon game including Ruby You can't go to the moon in any Pokemon game including Ruby
All The Shiney Pokemon You Can Get In Pokemon Ruby Are All The Pokemon You Can Get in Ruby Any Pokemon Can Be Shiney Even Starters and Legendaries. So There Are 200 Shiney Pokemon You Can Get In Pokemon Ruby.
No.
any Pokemon that isent legendary
There aren't any plates in Pokemon saphirre and ruby