title: Protect and serve.
mesh_terms: D000818:Animals; D044822:Biodiversity; D002965:Classification; D057231:Climate Change; D003247:Conservation of Natural Resources / Q000191:economics / Q000331:legislation & jurisprudence / Q000639:trends*; D056727:Endangered Species / Q000706:statistics & numerical data* / Q000639:trends; D053476:Extinction, Biological; D006802:Human Activities / Q000706:statistics & numerical data / Q000639:trends; D058865:Introduced Species / Q000639:trends; D055814:Wilderness