You can break rocks by using the move Rock Smash.
get the HM strength, and teach it to a Pokemon
There is no TM that can Break rocks in Pokemon leaf green there is however in HM that breaks rocks called RockSmash
HM06 Rock Smash
If you're talking about the small, rugged rocks, then I don't think you can. The only rocks I know you CAN move/break are the huge boulders made for Strength.
You obtain it when you get national dex
you need the national pokedex
migrate from gba game
u have to beat the nationaldex
You can break rocks by using the move Rock Smash.
You have to beat Cyrus on Spear Pillar
It's coming out in Spring 2009!
you need the Pokemon modifier cheat
You can find Spearow on Route 225 in Pokemon Platinum.
you have to send it from emerald to platnuim to black
Only 1 way and that is to breed a electabuzz
Level up a Pineco to level 31