送交者: xh 于 2005-3-17, 14:17:01:
回答: You have given some serious thought 由 AI 于 2005-3-17, 12:50:47:
I may not fully understand the least energy principle that you refered to. But to me, stars and planets are simple systems comparing to the mechanisms in E.coli.
We breath oxygen now might due to that the primary life form that won out long time ago happen to use the element.
There are plenty of other organisms use chemical or heat energy rather than the carbon form made by green plants. Either way works.