- Scraping an object may cause small particles to break off of that object
- A rock is a kind of object
- So, scraping a rock may cause small particles to break off the whole rock

- Scraping a rock may cause small particles to break off the whole rock
- Glacier may scrape rocks when it moves
- Hence, glacier can scrape a rock and cause small particles to break off the whole rock

- Very small rocks / minerals are kinds of of small particles
- Soil is made of very small rocks / minerals
- Therefore, soil is made of small particles of rock / minerals

- Glacier can scrape a rock and cause small particles to break off the whole rock
- Soil is made of small particles of rock / minerals
- So, the small particles of a rock scraped by the glacier can make up soil

Hence, the small particles of a rock scraped by the glacier can make up soil
Question: A glacier is a slow moving river of ice. How does a glacier help create soil?
Context: - Scraping an object may cause small particles to break off of that object 
- Very small rocks / minerals are kinds of of small particles 
- Glacier may scrape rocks when it moves 
- A rock is a kind of object 
- Soil is made of very small rocks / minerals