Seviper can be found in Route 114, which is south-west of Fallarbor Town. It is not accessible in Poke'mon Ruby, by the way.
You can find Seviper in Diamond, but you'll need Pokémon Sapphire as well. If you put Sapphire in the GBA slot, you can find Seviper at routes 208 and 210. It's rare and will be level 26 at route 210 and level 18 at route 208.
route 115
No. In Pokemon Diamond, Pearl, and Platinum there is.
in a route
Left of Fortree City.
To get Seviper, you have to have Pokemon Sapphire or Emerald (Zangoose is in Ruby) and you get it on Route 114 near Lanette's house.
In Sapphire and Emerald, you can find Seviper at Route 114. In Diamond, Pearl, and Platinum, Route 208(Sapphire has to be in the GBA slot.).
Evolve Gulpin, which are found on route 110.
It is found in the wild on Route 120.
Route 208 with sapphire inserted into your ds
there is no route 16 in Pokemon emerald
It appears in route 113 and it is rather rare.
tm28= Dig: found at Route 114
You can't find a Kirlia; you must evolve Ralts which can be found on route 102 in Emerald.
You can't get it in Ruby. It's only available in Sapphire and Emerald, where you can find one on Route 114.
Regirock is found in the Desert ruins in Route 111 on Pokemon Emerald. To access it you need to solve the Braille Riddle in the Sealed Chamber hidden on Route 134.
Yes, they can be found in the Fiery Path and on Route 113.