To: tet68
Fewer plants. Plants during this period were growing like crazy, pumping huge amounts of oxygen into the atmosphere (hence the really big bugs). At the end of this period, the oxygen levels dropped (maybe from global cooling and drying killing off a lot of the world's vegetation).
49 posted on
04/22/2005 1:22:54 PM PDT by
Junior
(“Even if you are one-in-a-million, there are still 6,000 others just like you.”)
To: Junior
Fewer plants. Plants during this period were growing like crazy, pumping huge amounts of oxygen into the atmosphere (hence the really big bugs). At the end of this period, the oxygen levels dropped (maybe from global cooling and drying killing off a lot of the world's vegetation). but unless you are assuming large amounts of the oxygen was buried, then that doesn't make sense. It's not like we have 10% CO2 floating around now.
106 posted on
04/23/2005 8:08:41 AM PDT by
lepton
("It is useless to attempt to reason a man out of a thing he was never reasoned into"--Jonathan Swift)
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson