| http://www.w3.org/ns/prov#value | - ???For well over a century, migratory birds have faced stresses such as commercial hunting, loss of forests, the use of DDT and other pesticides, a loss of wetlands and other key habitat, the introduction of invasive species and other impacts of human development,??? said Salazar. ???Now they are facing a new threat???climate change???that could dramatically alter their habitat and food supply and
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