What do you mean by biological weathering? Give two examples.
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Biological weathering is the weakening and subsequent disintegration of rock by plants, animals and microbes. Growing plant roots can exert stress or pressure on rock. ... Microbial activity breaks down rock minerals by altering the rock's chemical composition, thus making it more susceptible to weathering
Burrowing animals like shrews, moles, earthworms, and even ants contribute to biological weathering. In particular, these animals create holes on the ground by excavation and move the rock fragments to the surface
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