The predominant process of weathering in desert regions is

The predominant process of weathering in desert regions is physical weathering. This is because in deserts, the weather is often very hot and dry, with little to no moisture, which limits the activity of biological and chemical processes. Physical weathering is the process by which rocks and other geological materials are broken down into smaller pieces by physical forces such as temperature changes, wind erosion, and abrasion. In deserts, the extreme temperatures cause rocks to expand and contract, which eventually leads to cracks and fractures. These cracks and fractures then allow wind and water to erode the rocks further, eventually breaking them down into smaller pieces. So, in summary, physical weathering is the predominant process in desert regions because the hot and dry climate limits the activity of biological and chemical processes, and the extreme temperatures and wind erosion break down rocks and other geological materials into smaller pieces.