Weathering and erosion slowly chisel ... For example, acid rain dissolves limestone to form karst, a type of terrain filled with fissures, underground streams, and caves like the cenotes of ...

Erosion is the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river. Landslides are occasional, rapid movements of a mass of earth or ...

Freeze-thaw weathering occurs when rocks are porous (contain holes) or permeable (allow water to pass through). Water enters cracks in the rock. When temperatures drop, the water freezes and ...