- A landslide is when water / gravity rapidly moves rocks / soil downhill especially after a rain storm
- Erosion / storms can cause a landslide
- So, erosion causes rocks and soil to move downhill

- Erosion causes rocks and soil to move downhill
- A mountain is made of rocks / soil
- Hence, erosion can cause the rocks and soil on a mountain to move downhill

Hence, erosion can cause the rocks and soil on a mountain to move downhill
[Question]Which process occurs when rocks and soil slide down a mountain?
[Context]- A landslide is when water / gravity rapidly moves rocks / soil downhill especially after a rain storm 
- Erosion / storms can cause a landslide 
- A mountain is made of rocks / soil