Weathering means breaking down rocks from larger whole into smaller pieces by weather, and silt forms form the weathering of rocks. Given these facts, where does silt come from among 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       