Assertion: glacier's ice | /r/Synonym | firn
Facets:
Source sentences:
text: In temperate glaciers, snow repeatedly freezes and thaws, changing into granular ice called firn.
text: Bubbles create unusual patterns of sound as they rapidly escape from deep within the glacial ice (firn).
text: It becomes a dense, grainy ice called firn.
text: In temperate glaciers, snow repeatedly freezes and thaws, changing into granular ice called firn.