How does limestone errode when it gets wet?

Limestone erodes when it gets wet primarily due to the reaction between its calcium carbonate content and acidic solutions, such as rainwater that absorbs carbon dioxide from the atmosphere, forming carbonic acid. This weak acid reacts with limestone, leading to the dissolution of calcium carbonate into soluble calcium bicarbonate, which is then carried away by water. Over time, this process can create features like sinkholes, caves, and karst landscapes. Additionally, physical weathering can occur as water seeps into cracks, causing the rock to break apart.