You will need to put two Pokémon in the Breeding Center on Four Island however they will need to be compatible in order to breed. Ditto can breed with Pokémon such as Pikachu and Smeargle as well as all Starter Pokémon. Pikachu can also breed with Pokémon such as Raticate, Arbok, Sanslash, Nidoking, Vulpxi, Dugtrio, Psyduck, Primeape and Arcanine.
No.
Depends on what Pokemon you want.
You cannot get Legendary Pokémon Eggs in Pokémon LeafGreen due to Legendary Pokémon being incapable of breeding.
Trade Colloseum or evolve Houndour (to get by trading Houndoom from Colloseum and breeding).
All Pokemon evolve differently. Here's a breeding key (scroll down when you get there) http://www.serebii.net/pokedex-rs/
Yes, it's called breeding. On four island theres a day-care left two evolved pokemons that can have a baby pokemon.
Yes put leafgreen in the GBA slot in your DS and put Diamond in the DS Slot play Diamond and choose migrate to leafgreen follow the instructions then choose six Pokemon to migrate after your done go to the pal park to capture the 6 Pokemon you chose.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
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?
In Sapphire, there is Electrike, Manectric, Pikachu, Pichu(breeding), Raichu(evolve), Voltorb, Electrode, Plusle, Minun, Magnemite, Magneton, Chinchou, Lanturn, Zapdos(trade from FireRed or LeafGreen), and Jolteon(trade from FireRed and LeafGreen).
you should go to gamestop
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.