- Soil is formed by weathering
- Weathering means breaking down rocks from a larger whole into smaller pieces
- So, soil is formed by breaking down rocks from a larger whole into smaller pieces

Therefore, soil is formed by breaking down rocks from a larger whole into smaller pieces
Question
Which event can cause a large rock to become soil over time?

Context
- Soil is formed by weathering 
- Weathering means breaking down rocks from a larger whole into smaller pieces