Fact 1: Weathering means breaking down rocks from larger whole into smaller pieces by weather.

Fact 2: Silt forms form the weathering of rocks.

Given the two facts above, answer the question "Where does silt come from?" with the following options: 
- loose soil
 - Rocks breaking down
 - salt and water.
 - The area was once underwater
 - A lot of rain
 - Dry air
 - Hot temperatures
 - tectonic plates coliding


 

  Rocks breaking down       