nuzleaf evolves with a leaf stone
Seedot evolves at level 17 to nuzleaf. To evolve nuzleaf you need a leaf stone you could get at route 119 near fortree town or city.You can get a Seedot or a Nuzleaf in pokemon sappire
around level 43 :)
it doesn't evolve in Pokemon ruby.
Weezing does not evolve in Pokemon Ruby.
gloom and nuzleaf to shifery
You can't, you have to trade with Ruby. Seedot/Nuzleaf/Shiftry are Ruby-only Pokemon.
You migrate it from Pokemon Ruby or Emerald. You can evolve it into a Shiftry with a Leaf Stone. They're very rare but in Ruby you can catch them on Route 114.
Nuzleaf will evolve into Shiftry and the leaf stone will turn Gloom into Vileplume.
Nosepass doesn't evolve in Ruby, sorry.
Corpish will evolve at level 30
It will evolve at level 48
Altaria does not evolve.