[...] Some habitat will be damaged, that is true. However, construction methods are designed to minimize such effects. For example, Pokémon called Onix dig their own large tunnels through the ground. There is a type of Pokémon that normally takes residence in these tunnels afterwards, but they are not native to Unova, leaving the tunnels empty. Therefore, the natural tunnels made by a trained Onix can be used for subways and leaves out the need for other digging instruments that might cause more of a stir.

[Ingo pauses, and regards Masaomi thoughtfully.] I can't say what the relationship is between humans and nature in other worlds, but in mine, humans and Pokémon strive to harmonize their existences. There is, and has been, a balance between the two.