Yes, You can catch Groudon in Pokemon Emerald.
You can't catch one 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.
easy you just find it in the grass and then catch it
Yes, You can catch Groudon in Pokemon Emerald.
You can't catch one in Pokemon Emerald.
I can't remember, but I think it has to be level 22.
You can catch Tailow in Pokemon Liquid Crystal by heading to Route 32, where it has a 10% chance of appearing in the grass during the day. Use Repel to avoid encounters with other Pokemon and increase your chances of finding Tailow. It may take some time, so be patient and keep searching until you encounter one.
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.
you cant. You can only catch it in Pokemon emerald, but, you cant catch latias in emerald.
No you cannot catch Celebi in Pokemon Emerald.