Fact 1: Breaking apart rocks can cause debris.

Fact 2: Examples of such rock include sandstone and shale .

Given the two facts above, answer the question "What can cause debris?" with the following options: 
- breaking apart sandstone
 - some invertebrates
 - breaking apart air
 - remains of prehistoric life
 - exposure to cold
 - breaking apart clouds
 - breaking apart water
 - forest is destroyed


 

 breaking apart sandstone        