CBSE Class 9 Answered
Explain the role played by lichens, mosses and trees in soil formation.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(i) Lichens grow on the surface of rock and extract minerals from them. This creates small crevices at places where a thin layer of soil builds up.
(ii) Mosses grow over these crevices and deepens them to build up more soil.
(iii) The roots of trees grow into cracks in the rocks and widen to form soil.
Answered by | 04 Jun, 2014, 03:23: PM
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