A wall with orange-yellow lichen and moss growing on it. A symbiotic life form, lichen can also indicate air quality.

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Size: 4672px × 7008px
Location: Newcastle upon Tyne, UK
Photo credit: © Hazel Plater / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: adaptation, air, environment, form, growth, indicator, lichen, lichens, life, orange-yellow, organism, pollution, quality, slow, stone, symbiosis, symbiotic, wall, yellow