It also discusses the action of wind, water, and glaciers and the weathering and erosion caused by these natural elements.
(It; discusses; the action of wind, water, and glaciers and the weathering and erosion) (the weathering and erosion; caused; by these natural elements)
It the weathering and erosion
discusses caused
the action of wind, water, and glaciers and the weathering and erosion
by these natural elements