Erosion I think :-)
Erosionteaty man
Carbon dioxide (CO2) is the most common form of carbon that dissolves in rainwater. When CO2 from the atmosphere combines with rainwater, it forms carbonic acid (H2CO3), which is responsible for the mildly acidic nature of rain. This dissolved carbon in rainwater can then be utilized by plants for photosynthesis or can react with minerals in soil and water bodies.
Weathering of any kind can sometimes cause problems, like erosion of topsoil. Biological weathering, where the weathering is caused by living things (plants and animals), can cause the same kinds of problems.
Mechanical weathering is caused by the natural forces of wind, water, and temperature. These forces physically break down rocks into smaller pieces without changing their chemical composition. Examples include freeze-thaw weathering, abrasion, and exfoliation.
Acid precipitation is an agent of chemical weathering. It occurs when rain, snow, or fog has a high acidic content due to pollutants such as sulfur dioxide and nitrogen oxides, which can cause rocks to break down and deteriorate.
Physical weathering
chemical weathering called karsting and it createskarst topography. ... Dissolution of soluble limestone creates limestone cavessource yahoo answers
The 2 kinds of weathering are the Mechanical or Physical Weathering and the Mechanical Weathering.
physical weathering
Physical weathering
It is water weathering
Limestone is dissolved by carbonic acid through a process called chemical weathering. Carbonic acid forms when rainwater combines with carbon dioxide in the atmosphere or soil, creating a weak acid that gradually breaks down the calcium carbonate in limestone over time.