Delwedd:Potomac river eutro.jpg

Oddi wrth Wicipedia, y gwyddoniadur rhydd.

Potomac_river_eutro.jpg (29KB, math MIME: image/jpeg)

Gall y ffeil hon gael ei defnyddio gan nifer o brosiectau eraill.

  • Description: The bright green water in the Potomac River estuary is result of a dense bloom of cyanobacteria.
  • Source: English Wikipedia, original upload 29 April 2005 by Ike9898
Public domain This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration.

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