GEOLOGY

Detailed explanation-1: -Water is the principal agent behind both physical and chemical weathering, though atmospheric oxygen and carbon dioxide and the activities of biological organisms are also important.

Detailed explanation-2: -Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away. No rock on Earth is hard enough to resist the forces of weathering and erosion.

Detailed explanation-3: -Sometimes called mechanical weathering, physical weathering is the process that breaks rocks apart without changing their chemical composition. These examples illustrate physical weathering: Swiftly moving water. Rapidly moving water can lift, for short periods of time, rocks from the stream bottom.

Detailed explanation-4: -Clastic or detrital sedimentary rocks are made from pieces of bedrock, sediment, derived primarily by mechanical weathering. Clastic rocks may also include chemically weathered sediment.

Detailed explanation-5: -Abrasion weathering. Exfoliation weathering. Frost wedging. Salt crystallization. Thermal expansion. Biological activity/root wedging. 12-Oct-2021