I chose a pokemon chart for evolution because in the games, the pokemon can evolve. The Evee in this chart evolves to its environment much like how evolution works.
The #Eevee Brothers from the #Pokemon TV Series. How to evolve eevee into five different evo's in #PokemonGo @ http://www.pokemondungeon.com/pokemon-go/how-to-evolve-eevee-into-espeon-umbreon-jolteon-vaporeon-flareon
Pokemon X Y - Sylveon I thought the evolution method was going to be to let evolve with a pink ribbon or something but it Eevee evolves by friendship and learning a fairy type move to evolve into Syleveon by Madison Thomas
Eevee - 133 - A rare Pokémon that adapts to harsh environments by taking on different evolutionary forms. Thanks to its unstable genetic makeup, this special Pokémon conceals many different possible evolutions.