Agents of Weathering

There are 2 main types of weathering: Mechanical and Chemical. Mechanical weathering is the breaking down of rock by a physical process. Chemical weathering is the breaking down of rock by a chemical process. Below are a list of each agent of weathering for both mechanical and chemical.

Mechanical: abrasion, ice wedging, plant roots, and animals burrowing
Chemical: oxidation, hydration, carbonation, lichens