What places earths materials from most easily eroded to most difficult to erode?

Earth's materials can be ranked from most easily eroded to most difficult to erode as follows: loose soils and sediments, such as sand and silt, are the most easily eroded due to their lack of cohesion. Next are clay soils, which can be eroded but have some resistance due to their fine particles. Bedrock, like limestone and sandstone, is more resistant to erosion, while harder rocks such as granite are the most difficult to erode due to their dense structure and durability.