Although its orange sun is only about 90% the mass of Sol and half as luminous, Rannoch is arid by Earth standards because it formed closer to its star and has slightly less ocean coverage. Photosynthetic life is concentrated around rivers and oceans...

Legion's dossier continues in this vein for some time - a fellow AI, after all, should be able to read and comprehend it instantly. The portions discussing Rannoch's sapient life, the quarians, are highlighted.

Curiously, in discussing geth-quarian relations, the dossier says only that the quarians created the geth two centures prior, and nothing else.