yes
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That's not possible latias and latios are caught in ruby, sapphire or emerald you must trade them to firered to get them.
you go fly in the air and catch him with a net
all i know is how to get the regis and latios or latias.
No, you can only get Latias in Sapphire and Emerald and Latios in Ruby and Emerald.
Yes, you do need to have captured Latios and Latias in order to receive a Johto starter Pokemon. However, they themselves do not play an important role. To receive a Johto starter Pokemon from Professor Birch, you must have captured (or in some way owned) every Pokemon in the Hoenn Pokedex, so naturally having Latias and Latios is necessary.
yes
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.
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.
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.
No legendary Pokemon even latios and latias can have eggs.
they should be roaming the lands :)
No.
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It is not possible to get Latios, Latias and Magikarp or any non-starter Pokémon as your beginner Pokémon on Pokémon emerald. The only way to do this is via a cheat device such as action replay or game shark.
only latios and latias