Answers

2016-03-02T15:29:19+05:30
Lichens are the organism which can grow on stones and help in the formation of soil.
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  • Brainly User
2016-03-02T15:29:30+05:30
I think it is parthenium or lichens

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it is lichen which is symbiotic association of fungal species and cyanobacteria it produces substances which powder down the rock rock layer which help in soil formation
yep