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  •   |   NatureServe
    This new analysis by NatureServe addresses five essential questions about biodiversity–the variety of life on Earth–that need to be answered if we are going to effectively conserve nature: 1) How many species and ecosystems are at risk? 2) Are species and ecosystems adequately protected? 3) What are the major threats to biodiversity? 4) Where is imperiled biodiversity concentrated? 5) Where do we go from here?