Honestly, by the numbers, Earth is mostly an ocean/forest planet with some desert. Desert and ice planets are believable, too, given those are more temperature-based, and city planets seem like they'd be inevitable in a sci-fi setting just due to population sizes.
Honestly, by the numbers, Earth is mostly an ocean/forest planet with some desert. Desert and ice planets are believable, too, given those are more temperature-based, and city planets seem like they'd be inevitable in a sci-fi setting just due to population sizes.