Megathrust earthquakes, like one that can occur on the Cascadia subduction zone off the coast of Oregon and Northern California (north of Mendocino California), can be strongest in magnitude—stronger than a San Andreas earthquake like 1906.a. True
b. False

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.

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