Could life in solar system complicate space settlement?

On Mon, Apr 16, 2012 at 1:40 PM, wrote:
>
> I do not believe that it is possible to separate breathable air and
> agriculture.
(...)

Sure it is. Last time that I checked,
Vitalismwas dead since the 19th
Century, and you don't need some hypothetical
magical mojo from living things in order to fabricate fresh breathable air
- you just need used air, energy and a mechanism (biological or industrial)
to process one thing into the other.