Water.
Of course!! A lot of the Pokemon that you face at the gyms are around the area (at last a pre evolution or the same type of Pokemon at the gym). no offense but u have to be a noob to do that. i just gt my first Pokemon game. Emerald. i beat the elite 4 in 14 hours
In Mossdeep City which incidentally is also home to the Twin Gym Leaders (Psychic Type)
None of the gym leaders use Flying-type pokemon. If you want to face a Flying-type gym, you can battle against Winona in Ruby, Sapphire, Emerald, and the ORAS remakes. She’s located on the southwestern side of Fortree.
ground
Rectha
In Pokemon Sapphire, Ruby and Emerald the 7th Gym that's located in Mossdeep City has Psychic type Pokemon.
Fighting type, ground type
It depends on the type of Pokemon you have, how you battle, your Pokemon's levels, and the gym leaders Pokemon stats and moves and type. Mine was Morty because I had four normal type Pokemon. I used Feraligatr last and wooped his butt!
i think slaking.
Kyogre.
Poochyena is a dark type of Pokemon. In Pokemon Emerald it will evolve if you raise it up to level 18.
There are different types of gym leaders and each gym leader has a different pokemon type.