Actually you can only get one of them. First beat the PokemonLeague. Then you should go down stairs and watch TV. After your mom asks what color the Pokemon is pick one. If you pick blue you can get Latios. If you pick red you can get Latias. Then go to any city. Go to the nearest patch of grass and when you see two Pokemon that isn't Latios/Latias go back to the city and try again. It will need patience to find one.
No, you can only get Latias in Sapphire and Emerald and Latios in Ruby and Emerald.
yes
chaeat
The only way to get a latios or latias in your Diamond or Pearl is to migrate, latios from Ruby or Emerald. latias from Sapphire or Emerald.
to check where latios and latias are in pokemon emerald, you have to go to the pokedex, if you've seen them and go to the "area'' ICON.
It is possible, but you can't catch them both on 1 Pokemon game. If you have Pokemon Emerald, Ruby and or Sapphire. Then you can get them both. For example: Someone trade Latios and you have Latias, trade an another Pokemon for Latios and you have them both.
they should be roaming the lands :)
No.
No legendary Pokemon even latios and latias can have eggs.
Your Home
only latios and latias
That's not possible latias and latios are caught in ruby, sapphire or emerald you must trade them to firered to get them.