what six essential elements of geography would you study instances of cooperation and conflict in populations?

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.

Compare demographic and environmental effects of the columbian

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.