How does biological weathering occur?
Biological weathering combines both mechanical and chemical weathering and is caused by plants or animals. As plant roots grow deeper to find sources of water, they push through cracks in rocks, applying force to push them apart. As the roots grow, the cracks become larger and break the rocks into smaller pieces.
What is biological weathering state the main agents of biological weathering?
Biological weathering involves both physical disintegration and chemical decomposition as all biological matter is made up of oxygen and water. The main agents of biological weathering are animals, insects, plants and man.
What is the primary method of Biological weathering?
Trees put down roots through joints or cracks in the rock in order to find moisture. As the tree grows, the roots gradually prize the rock apart. Many animals, such as these Piddock shells, bore into rocks for protection either by scraping away the grains or secreting acid to dissolve the rock.
What are three causes of biological weathering?
Biological weathering only refers to weathering caused by organisms — animals, plants, fungi and microorganisms such as bacteria.