The burgeoning environmental movements of the middle part of last century are seen as signal achievements, ushering in an age of both greater environmental consciousness and reforms to stem the damage already done, and such a view (i)____________. But what is lost in all these paeans is that the seeds for why many today continue to doubt climate change were planted in the prognostications of the 1960s, which were so dire and overblown that the fact there was not a catastrophic rising of sea levels by the 1980s had many (ii)____________. Now that glaciologists have documented vast ice shelves in Antarctica calving off into the sea, it is not surprising that (iii)____________ are prone to thinking, "We've heard this before." A. has been largely destructive B. questioning the very movement itself C. impassioned advocates D. is not necessarily incorrect E. trumpeting the breakthroughs F. hardened skeptics G. is highly misleading H. criticizing opponents of environmentalism I. climate scientists