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How can plants cause physical weathering?

Answer

Plants can cause physical weathering by their downward root growth into the soil and rock surface, thereby resulting to creation of cracks and expansion of crevices and breaking down of the soil or rock material into smaller fragments.
Q&A Related to "How can plants cause physical weathering?"
Most minerals and rocks are formed deep within the Earth's crust under conditions of extreme pressure and temperature. At the Earth's surface, they meet completely new conditions,
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A seed may find its way into a crack of a rock, and if given what it
http://www.chacha.com/question/how-might-a-plant-c...
Physical Weathering - disintegration of rocks and minerals by a physical or mechanical process. Plant roots can extend into fractures and grow, causing expansion of the fracture.
http://answers.yahoo.com/question/index?qid=201104...
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Most minerals and rocks are formed deep within the Earth's crust under conditions of extreme pressure and temperature. At the Earth's surface, they meet completely ...
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