Cycles of freezing and thawing water cause ice wedging, and ice wedging is the most important form of mechanical weathering. Given these facts, cycles of freezing and thawing water cause  among the following options:
- exposure to cold
 - the oak can fall
 - mechanical weathering
 - the looseness of soil
 - In the winter
 - Metling snow
 - colder and wetter
 - looseness of dirt or compost


 

   mechanical weathering      