Which process is responsible for the formation of karst topography?
- Wind erosion
- Glacial action
- Chemical weathering of limestone
- Volcanic activity
Answer: Chemical weathering of limestone
Karst topography forms through chemical weathering (dissolution) of soluble rocks like limestone, dolomite, and gypsum by acidic rainwater. Features include caves, sinkholes, and underground rivers. Found in Meghalaya, India.