Where can you evolve in Pokemon?

Answer 1

You can evolve a Pokemon when it reaches to a certain level. Example:If you level up a Shinx to Level 15 it evolves into a Luxio and if you level up Luxio to level 30 you get a Luxray.

But some Pokemon evlove by stone. Example: Use a water stone on Evee and it evolves into a Vaporion.

Also Pokemon evolve by making it hold something and trading it. Example:Make Magmar hold a Magmamizer and trade it, it evolves into a Magmortar.

Some Pokemon also evolve through happiness like Eevee into Umbreon at night or Espeon at day.

Some Pokemon also evolve by holding an item and training it at night or day.