You will need FireRed to Get : Ekans, Arbok, Oddish, Gloom, Vileplume, Bellossom, Psyduck, Golduck, Growlithe, Arcanine, Shellder, Cloyster, Scyther, Scizor, Elekid, Electabuzz, Wooper, Quagsire, Murkrow, Qwilfish, Delibird, Skarmory, Deoxys (Attack Form).
you cannot catch celebi in Pokemon leafgreen. you can only get it through cheat codes or trading.
Only by trading it from Leafgreen/Firered.
Only by trading from LeafGreen and/or FireRed
Teddiursa is not obtainable in Leafgreen and the only way to obtain is from trading Teddiursa from either Pokemon Emerald or Pokemon XD Gale of Darkness.
You can only get Ekans on Pokemon Leaf Green by trading one from Pokemon Fire Red.
The only way to get Snubbull on Pokemon LeafGreen is by trading for one from Pokemon Emerald. Snubbull can be found in the Safari Zone extension of Pokemon Emerald which is unlocked by earning the National Pokedex.
Only by trading them from FireRed or LeafGreen.
Only by trading them from Gold, Silver or Crystal.
Bulbasaur is only obtainable through trading from Firered or Leafgreen
you can't only in Pokemon firered and leafgreen you can't only in Pokemon firered and leafgreen
Not in Pokemon leafgreen only in Pokemon Firered never ever in Pokemon leafgreen And in Pokemon firered it is rare in power plant not available in Pokemon leafgreen?
No, you can only get all starters without trading in Pokemon yellow, but Leaf Green is a newer version of Pokemon green, so it's impossible.