(par 7.3 ) Amphibian population decline (from Wikipedia)

Amphibian population decline http://www.waterencyclopedia.com/A-Bi/Amphibian-Population-Declines.html An unparalleled diminishment in populations is occurring worldwide in many species of amphibians (frogs, toads, and salamanders). Although there are various causes for declining amphibian populations,…

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