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provides research results, photos, projects, and other resources for studies in biology, biodiversity, and ecology. Learn about butterflies and moths of North America, bat research, invasive species, environmental contaminants' effects on plants and animals, redwood research, surf scoters, sea otters, reptiles and amphibians of southern California, the desert tortoise, habitat conservation, and genetic diversity across different species groups. (U.S. Geological Survey)
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