In fact, Iterators r likely made up mostly/entirely of individually self sustaining bio components that don’t rely on the rest of the system to live. Which is probably a big part of why they’re so hard to kill & why Moon isn’t just straight up dead after being comatose so long.
I’ve always wondered how iterators got nutrients for their biological parts…I genuinely think they photosynthesize. It doesn’t exactly have to be(& probably isn’t)photosynthesis, but something similar that is still applicable to Moon post collapse.