Frenzy Plant is a Generation IV move
Sky uppercut is not a TM.
There is not a tm for bite or crunch.
Thunderbolt
On Ruby, it is Iron Tail
Thunderbolt
23.
Yes, Tm's in Pokemon Omega Ruby and Alpha Sapphire are re-useable
Double Team
Trade.
yes
You can find it at Shoal Cave.
you can get it in seafloor cavern