To soft reset hold down L+R+START+SELECt to return to the title menu.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
a b select start at the same time ;)
L+R+start+select at the same time
On Pokemon Pearl's title screen, if the Pokemon LeafGreen game is in the GBA slot, click on "Transfer From LeafGreen" and you can choose six Pokemon from LeafGreen to transfer to Pearl, but be careful-you can't trade them back.
Soft reset for Pokemon Diamond is R+L+Start+Select.
To catch Mewtwo in LeafGreen or FireRed no. To migrate Mewtwo from LeafGreen or FireRed to Diamond/Pearl/Platinum yes you have to have it in Diamond/Pearl/Platinum.
Soft reset
Yes.
To soft reset hold down L+R+START+SELECt to return to the title menu.
L+R+Select+Start
You can by soft resetting a numerous amount of times.
r+l+start+select
You could cheat or soft reset.
No you don't, you will rarely encounter them in the wild.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
a b select start at the same time ;)