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File:Oxygen atmosphere.png

Oxygen_atmosphere.png ‎(617 × 467 pixels, file size: 25 KB, MIME type: image/png)

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Description
English: Representation of evolutionary and geological events leading to changes of oxygen content in earth's atmosphere since the formation of the planet.
עברית: תצוגה של המאורעות האבולוציוניים והגיאולוגיים שגרמו לשינויים בתכולת החמצן באטמוספרה של כדור הארץ

Geological events:

  • A) No oxidized iron found.
  • B) Oxidized iron bands in seabed rock = evidence for O2 in oceans.
  • C) Oxidized iron bands on land; ozone layer formation = evidence for O2 in atmosphere.

Biological events:

  • 1) Earliest fossilized cells found.
  • 2) Photosynthetic bacteria start producing O2.
  • 3) Aerobic metabolism evolves.
  • 4) Evolution of multicellular plants starts.
  • 5) Evolution of animals starts.

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Date 9 April 2007 (original upload date)
Source Transferred from en.wikipedia to Commons.
Author Tameeria at English Wikipedia

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Public domain This work has been released into the public domain by its author, Tameeria at English Wikipedia. This applies worldwide.
In some countries this may not be legally possible; if so:
Tameeria grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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The original description page was here. All following user names refer to en.wikipedia.
  • 2007-04-09 18:37 Tameeria 617×467×8 (25102 bytes) Representation of evolutionary and geological events leading to changes of oxygen content in earth's atmosphere since the formation of the planet. Geological events: *A) No oxidized iron found. *B) Oxidized iron bands in seabed rock = evidence for O<sub>

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current14:30, 1 June 2007Thumbnail for version as of 14:30, 1 June 2007617 × 467 (25 KB)Yonidebest (talk | contribs){{Information |Description={{en|Representation of evolutionary and geological events leading to changes of oxygen content in earth's atmosphere since the formation of the planet. Geological events: *A) No oxidized iron found. *B) Oxidized iron bands in s

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