therefore, to observe biological evolution, it should be under the direction of all things that may be causing the changes, and then consider potentials of an items capability to evolve, within the given environments to understand what happened in the evolution of the biological item of scrutiny.(this should include salts,carbons, etc.)
I think you might be grabbing a bit to much right now, as Catholic scientist said:
Well, sense this thread is suppose to be about biological evolution, it would be changes in a population via the natural selection of genetic mutations.
So he was talking about the biological sense of evolution. And this single sentence isn't the complete theory, its a summary of what the term biological evolution means in a broad perspective.. If you wan't to actually get in on everything influencing the processes.. Well you will have to do some research.