Fact 1: Sediment is formed by weathering.

Fact 2: Loose dirt, or sediments, from plowed fields is also a form of agricultural pollution.

Given the two facts above, answer the question "What is caused by weathering?" with the following options: 
- Water expanding
 - fish
 - loose dirt
 - rainfall
 - Rocks
 - kale
 - farms
 - flooding


 

   loose dirt      