onix evolves in a trade when holding the metal coat
onix doesn't evolve by level you have to trade it with a metal coat on it
Every Pokemon does not evolve. The legends, and unowns don't evolve. Only 90% of the Pokemon evolve.
pokemon do not evolve on pokemon colosseum
The Pokemon Illumise does not evolve.
Yes, they can. In order to evolve the pokemon, you just go to your inbox, click your Pokemon, and click "Evolve". If it is able to evolve in its current state, it will.
There is not really a easiest pokemon to evolve...but bug type pokemon evolve really fast
Tynamo will evolve into Elektrik will evolve into Elektross with a thunderstone in Pokemon White.
All the starters evolve in Pokemon Black. Many other Pokemon evolve as well.
You can't catch a crystal onix.
go to the pokemon page and click evolve
No, because no legendary Pokemon can evolve.
go to pokemon box, find the pokemon you want to evolve and click the green button that says evolve