| http://www.w3.org/ns/prov#value | - These crustaceans are sensitive to heavy metals such as copper, cadmium and zinc and scientists use them as a 'test organisms' for ...ESA to feature wide range of UW-Madison presentations...on Wisconsin's Bayfield Peninsula have struggled for decades, mainly due to springtime floods of snowmelt that blanket their gravel spawning beds with sand and clay.
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