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Otter project - monitoring pollution

When I was a child otters had been lost from most of England, poisoned by a range of chemicals that did not degrade and were bio-accumulated to lethal extents by top predators such as otters and birds of prey.
When I was a child otters had been lost from most of England, poisoned by a range of chemicals that did not degrade and were bio-accumulated to lethal extents by top predators… https://www.understandinganimalresearch.org.uk/news/research-medical-benefits/otter-project-monitoring-pollution/