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Describe two causes of biological weathering.
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Aug 9, 2021
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Geography Form 3
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anony mous
Describe two causes of biological weathering.
external land forming processes
weathering
biological weathering
causes.
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Aug 9, 2021
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anony mous
Action by plants
Roots of plants penetrate grow into joints or cracks.
As the trees grow bigger, the root also grow bigger widening the joints and cracks.
Blocks separate in what is called wedging mechanism.
Action of animals
Burrowing animals such as moley rabbits, Earth worms break off small bits of rocks from the main rock.
By digging these animals expose a large surface area to other weathered processes.
Large herds of cattle and Zebras’ bound the rock with there hooves as they move breaking them into smaller particles.
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