All the following are causes of mechanical weathering except

Answer Details

All the options listed in the question are causes of mechanical weathering except rain action. Mechanical weathering involves the physical breakdown of rocks into smaller fragments without altering their chemical composition. Rain action or dissolution is a chemical weathering process that involves the breakdown of rocks through the chemical alteration of minerals. Temperature changes, alternate wetting and drying, frost action, and action of plants and animals are examples of mechanical weathering processes that occur due to physical forces such as expansion, contraction, and pressure.