The vireo's comeback may prove that habitat along streams in Southern California is recovering from the effects of pollution,______ indicator of environmental health in a state that has lost most of its ______ woodlands.

A.a leading ... superfluous B.an apocryphal ... ecological C.a partial ... surfeit D.a telling ... riparian E.an anecdotal ... arboreal

时间:2023-08-11 17:41:32

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