Somewhere between petalburg city an rustboro city and it does 15 damage and it can hit 1-4 times usually and if you get luckey it can hit the fith time
Hope this helps
Deron Claideelio
Mt.moon
near the berry store there is a man talk to him and he will give you TM bullet seed
TM 09 is bullet seed
You have to find/buy the TM Bullet Seed and teach it to the Treecko...
There is not a tm for bite or crunch.
theres a few vacuum wave is good at the beginning but bullet seed is a good one.
Thunderbolt
Yes, Tm's in Pokemon Omega Ruby and Alpha Sapphire are re-useable
Trade.
25
Double Team
you can get it in seafloor cavern