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biological weathering

Biological Weathering  
Part of the National cirriculum

limpets and barnacles eroding limestone - Click to enlarge
Click image to enlarge

Form of weathering caused by the activities of living organisms – for example, the growth of roots or the burrowing of animals. Tree roots are probably the most significant agents of biological weathering as they are capable of prising apart rocks by growing into cracks and joints. Plants also give off organic acids that help to break down rocks chemically (see chemical weathering).

© RM 2009. Helicon Publishing is division of RM.


 
 

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