Because they grow or shrink in response to snowfall and snowmelt, glaciers are sensitive indicators of changes in regional and global climate. To grow, a glacier must receive more snow in winter than melts or evaporates the following summer. If more melts than accumulates, a glacier will shrink.
[{"glaciers": "n/a", "shrinking": "n/a", "heights": "n/a"}]
[{"glaciers": "n/a", "shrinking": "n/a", "heights": "n/a"}]