I am currently writing a script for my graphic novel. My novel is in the fantasy genre and I use energy-based hard magic (that is energy-based magic that has its sort of "science" and rules). So I don't need my world to be 100% scientifically accurate in its functions, but enough for it to be believable to the reader. My world also utilizes retro-futuristic technologies.
The earth-like world in my story is unique in that the continents have been separated from the earth by god-like beings ordained with power from the world's creator to protect the world from a destructive evil trapped in the earth's core.
How would I make an Earth-like planet with aerial continents believable and in what ways would this affect the weather, people, flora, and fauna of the continents?
The floating landmasses are hypothetically close enough to the world below to retain normal atmospheric activity but high enough to be protected from the infected land below.
For additional information, my continents went aerial about 1000 years before my story begins. Also, my continents are powered with energy cores made up of intelligent magical magnetic energy. Also, the continents vary in size and proportions, but some are big enough to hold up to two or three well-populated cultures. More advanced civilizations in my story also harvest recourses from the earth's surface through mechanical processes.
I am not a very science-minded person, so any help would be deeply appreciated.