Yes you can
No
You unlock a new one when you beat a chapter in the game.
You must have sky blue plains in order to unlock howling forest. If you have it, go to the bulletin board and then click the mission that says client: smeargle. It will unlock
You Can't
unlock pure forest get blue sky meadow
a few days after manaphy comes back
You beat Darkrai then wait for a few in-game days.
Answer:Beat chapter 9 in story mode to unlock special episode Genius Igglybuff.
You have to beat chapter 13
by getting the hm for fly
you don,t and you can"t