Key Stage 3 (KS3) Geography Practice Test - Prep, Questions & Study Guide

Limestone is a sedimentary rock that is particularly susceptible to erosion, especially through a process called chemical weathering, often in the form of dissolution by acid rain or natural acidic water.

Caves are formed by the underground erosion of limestone as acidic water seeps through cracks and dissolves the rock, creating vast caverns. Stacks, which are tall, isolated columns of rock, can form from waves eroding the base of cliffs made of limestone. Arches are also created through the erosion of rock formations, including limestone, where softer stone erodes away, leaving a natural archway.

On the other hand, deserts are characterized by their dry conditions and lack of water, which significantly reduces the potential for erosion as seen in limestone terrains. While some erosion can occur in desert environments, it generally does not result in the unique landforms commonly associated with limestone erosion, such as caves, stacks, or arches. Therefore, deserts are not typically associated with the erosion of limestone.