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Tree growth indicative of good air quality NYT Crossword Clue

Down clue · from the January 31, 2026 puzzle

Stuck on “Tree growth indicative of good air quality” from the New York Times Crossword? Here is the verified answer:

Answer
LICHEN
6 letters · Down · last seen January 31, 2026

More clues from the January 31, 2026 puzzle

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