Match the following:
| a. Physical weathering | 1. It involves a variety of processes such as hydrolysis, hydration, oxidation and reduction. |
| b. Chemical weathering | 2. It is done by living organisms such as lichens and bryophytes. |
| c. Biological weathering | 3. It involves various climatic factors such as temperature, wind, rain water, ice, snow, glaciers and running water. |
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