What is an area of land in which all freshwater converges into the largest stream, ultimately draining into the largest body of water?

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.

Distance that lewis and clark traveled from st. louis to ft. clatsop near the pacific ocean.

What distinguishes monsoon asia from the remainder of asia? what are the consequent differences between the two?