use hm Cut.
You just have to go up to the door and have a Pokemon to use Cut on it. Simple. Hope that helps xx
you train them!!!
The Tanoby Chambers open up so you can catch all the Unowns.
Level them up.
up your bum
If you trade Pokemon between leafgreen and ruby ruby will have your leafgreen Pokemon and leafgreen will have the ruby Pokemon both in the party they will not be sent to the PC unless you personally walk to the PC and do so.
beat a trainer and search the Pokemon up in your Pokedex
It evolves porygon to porygon2
you can only find it :-(
To play the true game online is impossible. But if you want to play it for free on your computer, there is a way. First, you must download the VISUALBOY ADVANCE. Then, look on the key-words : Pokemon leafgreen ROM. Most likely you will get a .rar or .zip file. Do not open them. Open the visualboy advance and click "Open gameboy" or just "open..." Look up your ROM and click it. There you go, leafgreen on your PC. I hope it helped.
First, you need to get the ruby and the sapphire in leafgreen, thenyou just hook them up using a cord (you can't do this with a ds, only with a GBA)
EASY! Just take a screwdriver , open up your game , pick the green cord , and then notice that im lying and you broke your game.