Would it be possible for a creature like the alien out of Alien(s,3, ressurrection) to evolve and if so, how would it work?
Obviously my thread is not limited only to my question, so feel free to demonstrate how other creatures from outer space might work.
So firstly, Acid for blood. OK, we have batteries that use concentrated acid, so that could function alot of the moving limbs. But they eat meat!!! Remeber Alien 3, the alien is eating the dog once it punches its way out and it then proceeds to eat everyones brain. How could that possible digest into anything resembling acid? But then we have stomach acid, so it's obviously possible. I think you're catching my drift...
Somewhere, something incredible is waiting to be known.