Water fern (Azolla filiculoides),aerial view. This aquatic fern forms a symbiotic relationship with a cyanobacterium,enabling it to fix nitrogen from the air | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kidd, Geoff |
Taille de l’image : | 3828 px × 4983 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |