Quote:
Originally Posted by sounding
|
Even I can answer that graph in your YOU/Tube insert. The bottom axis is in MILLIONS of years, which makes it useless to a discussion about the last 15 years that I am saying that Climate Scientists are worried about. I am NOT a Paleantologist (I can't even spell it right), but I would GUESS that as the Earth COOLED the oxygen and nitrogen gas atoms replaced the CO2 atoms. And since we HUMANS breathe O2 then we were able to exist.