Evolution of Life Was Stalled for 2 Billion Years


	Evolution of Life Was Stalled for 2 Billion Years

thisnamecantbetaken

3-29-2008 5:29 AM

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3-29-2008 6:32 PM

kkcapricorn

I know a few people whose evolution is still stalled.

3-29-2008 6:55 PM

syncopath

seems also 2 billion years is a temporary period of time ................... -))

3-29-2008 9:11 PM

skwirlinator

A Loooooooong Draaaaaawn out POP

4-1-2008 9:33 AM

tanyamm

2 billion years is a mere snap of time in the grand scheme of things.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/29af5736-1125-450e-91f9-a46916e2c0aa/5FE09002-C4AE-451D-BA3D-B25121DE96EB/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html" href="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html" style="font-size: 11px;">www.dailygalaxy.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html"><H3 class="entry-header">Evolution of Life was Stalled for 2 Billion Years</H3></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html">A coherent picture of the environmental conditions that led to the evolution of animal life is finally emerging. Scientists say that oxygen deficiency and a lack of the heavy metal molybdenum in the oceans had blocked the evolution of life on Earth for nearly two billion years.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.dailygalaxy.com/img/E836A2B0-02D8-4704-88AC-496D8C963552" alt="Imag004_2" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html"><P>The molybdenum record shows that the second step occurred around 600
million years ago, when the entire ocean became oxygenated, which
enabled the rise of multi-cellular life called eukaryotes -- the
category that includes plants, humans and other complex creatures.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html"><P>"These molybdenum depletions may have retarded the development of
complex life such as animals for almost two billion years of Earth
history," said Timothy Lyons, a professor at University of California
Riverside. "The amount of molybdenum in the ocean probably played a
major role in the development of life."</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.dailygalaxy.com/my_weblog/2008/03/evolution-of-li.html">Molybdenum levels are also a reliable indicator of oxygen levels in
ocean chemistry.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/5FE09002-C4AE-451D-BA3D-B25121DE96EB/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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