File:Oxygen atmosphere.png

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

Summary

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.

For sources, compare to:

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

Licensing

Public domain This work has been released into the public domain by its author, Tameeria at English Wikipedia. This applies worldwide.
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Tameeria grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log

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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Date/TimeThumbnailDimensionsUserComment
current14:30, 1 June 2007Thumbnail for version as of 14:30, 1 June 2007617 × 467 (25 KB)Yonidebest{{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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