How have deforestation, desertification, and damming negatively affected the environment?

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

What conclusión can be drawn about the middle east

Plants can have a positive and negative effect on the rate of weathering