Cracks in rocks : mechanical
Lichen growing on rocks : chemical
Roots or plant growth making cracks in the concrete : mechanical
Worn away statues : chemical and mechanical in my opinion
Exposed rocks : mechanical
Rust on rocks : chemical
Answer:
Increase in livestock population results in overexploitation of pastures. Due to this, grass and other types of vegetation are unable to survive and grow in the area, and lack of vegetation cover leads to soil erosion.
Rocks are broken down into smaller pieces by the process of weathering and erosion.
Hope this Helps!
