File:Plankton.jpg
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Plankton.jpg (400 × 259 pixels, file size: 34 KB, MIME type: image/jpeg)
"Phytoplankton account for half of all photosynthetic activity on Earth.
Thus phytoplankton are responsible for much of the oxygen present in the Earth’s atmosphere – half of the total amount produced by all plant life."
http://en.wikipedia.org/wiki/Phytoplankton
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current | 18:48, 5 October 2013 | 400 × 259 (34 KB) | Siterunner (talk | contribs) |
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