First beat the Elite Four. Then you go to the top floor of the Weather Institute on Route 119 and talk to man at the left of the room. He will tell you it is either dry or wet on a route. Go there and if it is dry, you will find Groudon. If it is wet, you will find Kyogre.
There is no such Pokemon as kyoka.
no but you can get both Kyoger and Groudon in emerald
Cave of Origin.
catch kyoger and groudon
you dont you can only get them from emerald ruby or sapphire
You can fight Archie before he awakens kyoger
You can't catch one in Pokemon Emerald.
Yes, You can catch Groudon in Pokemon Emerald.
No you cannot catch Entei in Pokemon Emerald.
You can't catch a Bellsprot in Pokemon Emerald. You trade it from Pokemon Leafgreen!
There are many Pokemon you catch that are similar in sapphire and emerald but there are many Pokemon emerald can only get and not sapphire.
Cressilia is a 4th generation Pokemon so you can't catch it in Pokemon Emerald.
You can't catch or obtain other trainers Pokemon in emerald.