You can't
do it quickly or with a master ball
Chat with our AI personalities
You can't get nidoran in emerald only in firered and leafgreen.
It is impossible to catch a male or female nidoran in Pokemon Ruby. To get one you'd have to get it by trade.
Yes, You can catch Groudon in Pokemon Emerald.
You can't catch one in Pokemon Emerald.
No you cannot catch Entei in Pokemon Emerald.