1) Why Princess Celestia is not a Queen? Who are the Queen and King!?
I think that Luna and Celestia are = to a King or Queen. Nither are more important than the other. 2) What's beyond Equestria, is it a round planet just like Earth!?
Thats a hard question. I think its a round planet and their is more beyond Equestria. I'm a bit confussed how the sun really moves around the planat, so any thing out side of the borders live in a different way. 3) What would happen if a pony finds his her special talent but later in life she he realises she he doesn't want to do that anymore? Would his her cutie mark change!?
Retirement mady, posibaly a hobby. At that point I wouldn't care if I was a pony. 4) Why parasprites don't devore the Everfree forest!?
Well I don't like tomatos. 5) Why do ponies have a cutie mark? Who or how do they appear? Magic? I don't think so!
Cutie mark repersent a pony's destiny and talent. All ponies have some amount of magic; I'm shure its connected. 6) What if a crystal pony has an accident and breaks a leg shall it shatter into pieces just like glass!?
Ummmmm. Magic...I've got nothing 7) What are ponies made of!?
Cells,skin, we do have real ponies. 8) How was Equestria made!?]
The magic of friendship made the 3 pony tribs conjoin in to one nation. AKA: Harthwarming phenomenon 9) Celestia and Lunas parents!?
Dead or L+C were born from a singal drop of the sun and moon. 10) Why do Pegasus have to clear the skies? Isn't that supposed to be a nature issue?
Pegasus have always had to control the weather for the earth ponies for food. Weather is uncontrolable in the Everfree forest. 11) Who was the first pony to exist?
GOD! 12) Why there's no sea ponies?
Well the sirens are sort of sea ponies, I think. We just haven't seen them in this Generation.