Weathering means breaking down rocks from larger whole into smaller pieces by weather, and climates with freeze and thaw promote mechanical weathering. Given these facts, what can can break down rocks from larger wholes into smaller pieces among the following options:
- Earthworms
 - sea urchins
 - Freezing and thawing
 - Calcium carbonate
 - Compaction
 - mechanical
 - Sedimentation
 - Cementation


 

   Freezing and thawing      