Seadra can never level up to evolve. You have to trade it when it is holding a Dragon Scale item.
- Pokemon Guru
It evolves when it is traded while holding the king's rock.
After you get one, you trade it to another game when it is holding a Kingsrock.
Emolga does not evolve. I played Pokemon White also and it does not evolve. Some Pokemon do but this one does not evolve.
He does not evolve.
Your Seadra will evolve when you trade it with another person while it's holding a dragon scale (there are two in Black/White on Routes 13 & 18 ). Therefore, for you to obtain Kingdra, you must trade a Pokemon with someone for his/her Seadra that is holding a dragon scale. See related link for more information: http://www.serebii.net/index2.shtml
In Pokemon White and Black, Cubchoo will evolve into Beartic at level 37. You do not need to trade or use any items to evolve this Pokemon.
He does not evolve by level he evolves when u trade to another Pokemon black or white game
You have to evolve it with its happiness level at 220.
At level 59, it will evolve into Volcarona.
he/her should evolve at level 33
Throh don't evolve in Pokemon Black and White.
Audino doesnt evolve in Pokemon black and white