Soil sample. Researcher preparing a soil sample for analysis of carbon and nitrogen content. By studying the levels of these two minerals in the soil,scientists are able to determine how fertile it is and what plant life it can support. Photographed at the Centre of Alpine Ecology,Trento,Italy | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Fermariello, Mauro |
Taille de l’image : | 3769 px × 4654 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |