"The researchers found that levels of elements such as cerium and iron detected in the rocks showed that low-oxygen conditions occurred between well-oxygenated surface waters and fully 'anoxic' deep waters. Although abundant in well-oxygenated environments, early skeletal animals did not occupy oxygen-impoverished regions of the shelf, demonstrating that oxygen availability (probably >10 micromolar) was a key requirement for the development of early animal-based ecosystems."
More evidence for the expansion of livable, oxygenated ocean regions behind the so called Cambrian explosion. Evolution has its place in this relatively rapid life form expansion and the key is oxygen.
1 posted on
09/23/2016 3:50:31 PM PDT by
JimSEA
To: JimSEA
"Evolution has its place in this relatively rapid life form expansion and the key is oxygen gullible humans." Easy one.
2 posted on
09/23/2016 3:54:51 PM PDT by
Fungi
(Soy sauce, you want soy sauce? Enjoy your soy sauce with all the fungi in it!)
To: JimSEA
Wow, it never occurred to me that animals needed oxygen. What’ll they think up next?
5 posted on
09/23/2016 4:00:33 PM PDT by
Tax-chick
(The coming of a Cthulhu presidency will be heralded by a worldwide wave of madness.)
To: JimSEA
Was that the only difference in the purported habitat?
8 posted on
09/23/2016 4:12:36 PM PDT by
Getready
(Wisdom is more valuable than gold and diamonds, and harder to find.)
To: JimSEA
Is this some kind of magician’s trick, look at this hand, not that hand?
The problems in evolutionary theory go a bit beyond oxygen.
11 posted on
09/23/2016 4:17:45 PM PDT by
lurk
(TEat)
To: JimSEA
.
Evolution maintains its place in the trash can full of loser theories.
(alongside its promoters)
.
13 posted on
09/23/2016 4:20:11 PM PDT by
editor-surveyor
(Freepers: Not as smart as I'd hoped they'd be)
To: JimSEA
The ignorant smartypants remarks you are receiving are an embarrassment to conservatism.
14 posted on
09/23/2016 4:23:12 PM PDT by
Moonman62
(Make America Great Again!)
To: JimSEA
It has long puzzled scientists why, after 3 billion years of nothing more complex than algae, complex animals suddenly started to appear on Earth.
...
Can’t this be taken that complex life is rare?
16 posted on
09/23/2016 4:25:59 PM PDT by
Moonman62
(Make America Great Again!)
To: JimSEA
I noticed long ago a correlation between the trailing off of banded iron formations (which were oxygen sinks) and the emergence of more complicated life forms.
18 posted on
09/23/2016 4:29:22 PM PDT by
dirtboy
To: JimSEA
That, plus the climate settled at one optimal temperature and hasn’t budged since 1970.
To: JimSEA
28 posted on
09/23/2016 5:17:06 PM PDT by
DennisR
(Look around - God gives countless, indisputable clues that He does, indeed, exist.)
To: JimSEA
Every ‘form’ of life is the product of it’s environment. Change the environment, that ‘form’ will change.
33 posted on
09/23/2016 5:46:54 PM PDT by
UCANSEE2
(Lost my tagline on Flight MH370. Sorry for the inconvenience.)
To: JimSEA
34 posted on
09/23/2016 5:48:31 PM PDT by
GOP Poet
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson