It depends if ur talkin about time and darkness or red and blue. Here are links that show you his moves for each game:
http://www.serebii.net/spindex-dp/252.shtml -for time and darkness
http://www.serebii.net/spindex/252.shtml - for read and blue
oioipo
Some moves Treecko can learn by leveling up are energy ball, quick attack, agility, and detect. Treecko can also learn giga drain, and pursuit.
Treecko weighs 11 pounds and can learn many moves including energy ball, mega drain, and absorb. Treecko can also learn solar beam, and grass knot.
Level 20 is when it learns Spark, and then he starts to learn all sorts of other moves like Discharge.
Bulbasaur can learn any move he can learn in Pokemon leafgreen/ firered.
No, Groudon does not learn Earth Power in Pokemon Mystery Dungeon: Explorers of Time. Groudon's movepool in the game consists of moves like Earthquake, Fire Blast, and Solarbeam.
electic type moves
you should be lucky to be a treeko! he can learn a variety of moves at the start, such as pound, absorb, bullet seed, and much more, which will help against groudon quickly
Squirtle learns the normal Pokemon diamond moveset and you can find out what that is on bulbapedia (type it into Google).
When you set a move and press L+A you use the move.
It depends on what moves you teach it and the dungeons that you face.
You can make your Pokemon remember as many forgotton moves as you want for 500p at the electivire link shop. It's the same in all of the other Pokemon mystery dungeon versions as well, except that in red and blue, the link shop has a different owner. From M