Iron oxide in a stream. Close-up of iron oxide (rust) powder coagulating and flocculating in the surface of water in a small rivulet. Weeds or algae,serving as a nucleus,may be the main cause for this. Other than that a change in temperature or pH of the water may have enhanced the coagulation | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5197 px × 3465 px |
Model Release : | Non requis |
Restrictions : | - |