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Flora : Roots of trees penetrate into the soil in search of minerals. Sometimes the plants grow within the fissures in the rock leading to widening of the fissures and eventually rocks disintegrate.
Fauna : Microscopic organisms such as algae, moss, lichens and bacteria grow on rock surface and produce chemicals, which react with the rock surface and create weathering. Burrowing animals like moles, mice, rats, reptiles, like snakes etc., dig holes in the soil and speed up disintegration.
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