Arizona Cattle Growers' Association v. Ken Salazar; H. Dale Hall; United States Department of the Interior; Paul K. Charlton; Eric H. Holder Jr.; Center for Biological Diversity.
United States of America
An umbrella term to describe collectively the variety and variability of nature. It encompasses three basic levels of organisation in living systems: the genetic, species, and ecosystem levels. Plant and animal species are the most commonly recognized units of biological diversity, thus public concern has been mainly devoted to conserving species diversity. (Source: GEMET/ WRES / GILP96)