What are biological weathering agents?in geography?
Hi Janet Pena. Biological weathering involves the disintegration of rock and mineral due to the chemical and/or physical agents of an organism. The types of organisms that can cause weathering range from bacteria to plants to animals. The main biological weathering agent being (i) Vegetation (ii) Animals, mainly micro-organisms Biological weathering involves processes that can be either chemical or physical in character. Some of the more important processes are: 1. Simple breaking of particles, by the consumption of soils particles by animals. Particles can also fracture because of animal burrowing or by the pressure put forth by growing roots. 2. Movement and mixing of materials. Many large soil organisms cause the movement of soil particles. This movement can introduce the materials to different weathering processes found at distinct locations in the soil profile. 3. Simple chemical processes like solution can be enhanced by the carbon dioxide produced by respiration. Carbon dioxide
