Links Library: Integrative Biology
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Ecology and The Environment
: North American Habitats and Extinction Issues
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American Rivers- A Mass Extinction of Freshwater Species
- Aquatic animals are the most threatened on the planet. Links to many sites by region.
Amphibian Checklist and Identification Guide
- From the USGS: The North American Reporting Center for Amphibian Malformations.
Toward a Land Use History of North America:
- A context for understanding environmental change.
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