Question

Explain ways in which plants cause weathering of rocks.

Answer 1

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.