Here's why:
* Rain: Rainwater can be slightly acidic, which helps break down rocks. Additionally, the force of raindrops can dislodge small particles.
* Rivers and Streams: The flow of water in rivers and streams can carry rocks and sediment, eroding the riverbed and banks. This is called abrasion.
* Waves: Ocean waves crashing against coastlines can erode cliffs and rocks, creating formations like sea arches and sea stacks.
* Glaciers: As glaciers move, they can pick up rocks and sediment, carving out valleys and leaving behind deposits of till.
While other forces like wind and ice can also contribute to erosion, water is the most significant and widespread agent of erosion.
