Answer: LICHEN

Possible questions:


Tree growth we know 4 Answers
Fungus we know 4 Answers
Rock growth we know 1 Answer
Growth on a rock we know 2 Answers
Mossy growth we know 1 Answer
It grows on rocks we know 1 Answer
Fungus-alga union we know 1 Answer
Woodsy growth we know 1 Answer
Tree-trunk cover, perhaps we know 1 Answer
Symbiotic growth we know 1 Answer
Source of litmus we know 1 Answer
Reindeer moss, e.g. we know 1 Answer
It may grow on rocks we know 1 Answer
Iceland moss we know 1 Answer
Growth on trees and rocks we know 1 Answer
Growth on rock walls we know 1 Answer
Fungus + alga we know 1 Answer
Alga-fungus symbiosis we know 1 Answer

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