/sci/ - Science & Math

>>4930710
If it helps at all, have a realistic example. pre-cambrian, co2 levels were fantastically higher than they are now, and oxygen was rather low. any organism that can feast on co2 and sunlight would have been master of the world. This happened with rather cyanobacteria-like cells. there were also distant evolutionary cousins that ate other cells and some pretty primitive multicelled things out there, but the selective pressures favored the first. the cells didn't "know" that fixing oxygen and getting energy from sunlight would lead to proliferation over the planet. It's just that the cells that were able to do so were able to do just that. And so they did!