Agricultural runoff research. Soil scientists (foreground) collecting sediment samples from a river to evaluate the nutrient concentrations in them. This is being done in order to detect if surface runoff from the neighbouring farm has affected the nutrient levels of the river. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US DEPARTMENT OF AGRICULTURE / Kossi Nouwakpo |
Bildgröße: | 3750 px × 2500 px |
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Eigentums-Rechte: | nicht erforderlich |
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