which symbiotic life forms can grow on stones and help in the formation of soil? write the mode of their action for making soil from rocks?

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Solution

It is a chemical process of soil formation.
Lichens grow on surface of rocks release chemical substances which cause the rock surface to powder down and form thin layer of soil.
More to know:
Soil formation depends on the parent rock material, the climate and topography of the area, the organisms present in the soil and the time over which the soil has been developing. Over long periods of time, thousands and millions of years, the rocks near the surface of the earth are broken down by various physical, chemical and some biological processes. The end product of this breaking down is the fine particles of soil.

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