[spoiler]Satellites can map as well and they did fight on the surface for a bit. I think the question is what do you mean by biological? [/spoiler]
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[spoiler]It's not just metal, it's dirt, grass, and an ecosystem. Until the Xyuthen were unleashed in self-defense. Then the Ecosystem was shot to shit; it'll probably require a Rinse once everything's said and done.[/spoiler]