Respuesta :
Physical weathering:
1. Frost action: Water seeps into cracks in rocks, freezes, and expands, causing the rocks to break apart.
2. Abrasion: Rock surfaces are worn down by the movement of sediment or other rocks against them, such as by wind, water, or ice.
3. Root pry: Plant roots grow into cracks in rocks and exert pressure, causing the rocks to break apart.
4. Thermal expansion and contraction: Rocks expand when heated and contract when cooled, leading to cracking and weathering.
Chemical weathering:
1. Hydrolysis: Water reacts with minerals in rocks, breaking them down into new minerals and substances.
2. Oxidation: Oxygen combines with minerals in rocks, causing them to rust or change color.
3. Carbonation: Carbon dioxide dissolves in water to form carbonic acid, which reacts with minerals like limestone, leading to their dissolution.
4. Acid rain: Rainwater becomes acidic due to pollutants like sulfur dioxide and nitrogen oxides, which can accelerate the weathering of rocks and structures.
