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How do plants cause weathering?

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sharnee1 | Student, Grade 10 | eNotes Newbie

Posted October 28, 2008 at 5:59 AM via web

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How do plants cause weathering?

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melony82 | High School Teacher | (Level 1) Associate Educator

Posted October 28, 2008 at 10:08 AM (Answer #1)

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Plants can cause both mechanical and chemical weathering. 

Mechanical weathering occurs when roots grow and cause the rock to break (just like the roots that crack the sidewalk).  

Chemical weathering occurs when roots release chemicals, like acid, which then break down the rocks.

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atyourservice | TA , Grade 10 | Valedictorian

Posted July 28, 2014 at 8:45 AM (Answer #2)

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The roots of plants can grow and slowly cause rocks to break as the pressure of their roots increase. 

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