Pollution monitoring. Scientist takes a sample from the shore of a lake in order to monitor possible pollution by sludges containing heavy metals. Heavy metals can be toxic if consumed in large doses over a period of time. Photograph of Dr David Santillo,a Greenpeace researcher,working in Gujarat,India | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Edwards, Bob |
Taille de l’image : | 5371 px × 3642 px |
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