Quote Originally Posted by thcbongman
Thanks to the general atmosphere where wind can bring seeds to foster new life, if you take away the atmosphere, there is no life. That's proven dude.
What is the atmosphere? The basic necessity of life, or simply a conglomeration of random gaseous chemicals that all are mixed up on the surface of this planet by coincidence and a complicated series of chain reactions?

You seem to be reasserting the fallacy that oxygen (or any particular element or molecule or chemical reaction) is vital for the development of life. Without a clear sense of the nature of "life" itself, how can we distinguish the requisites for it's development? There is no satisfying definitive explanation for what life is, beyond no-meaning dictionary phrases such as "the principle or force considered to underlie the distinctive quality of animate beings."

So yes, for any area to be considered an ecosystem, there must be life interacting with non-life, but since we have no way of knowing what matter is in fact "alive" and what is not (except for how it aesthetically appeals to us), not only is every existing ecosystem fully replaceable, but areas that are obviously not ecosystems must always be considered potential ecosystems. After all, life developed from non-life at some point, another thing we don't understand that could easily be happening constantly across the universe in a multitude of different (and mostly unrecognizable to us) ways.