O.K. I'm starting to be very pissed about everything I read here.
Let us remember that DB is a "virtual world" - not "real".
So we don't need to be very precise.
I don't think there is a computer in the world, that can calculate every condition that exist in nature, so we should simplify it.
Let us simplify nature.
1. gather info
2. make it simple
As I know, DB 3.0 will contain CO2 and O2 levels (and other?)in the e-grid, but you can't see it. Why would you? The same is with enzymes. Why do we need their presence? Let's just asume they are there. Anyway, if we add to much stuff to DB, it's gonna become more and more complex, what meens, it's gonna become more and more unstable.