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Explain ways in which plants cause weathering of rocks.

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  1. Roots of plants/ trees penetrate into the joints/ cracks of rocks widening them hence causing the rock to disintegrate.
  2. Plants decompose/ rot forming organic/ humic acids which cause rocks to decay/disintegrate.
  3. Mosses and lichens moisten rock surfaces facilitating chemical weathering.
  4. Widening of crack and joints by plant roots allows water and air to enter into the rocks hence accelerating weathering.
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