What are the differences between political maps and special purpose maps of ethnic, economic, and environmental patterns?

In galveston, located in the gulf coastal plains (prairies and marshes), the beaches are often exposed to hurricanes originating in the gulf of mexico. it is reasonable to predict that the hurricane activity may? a. create new rivers near galvestonb. move sand from the beach to offshore sand barsc. cause local earthquakes after the stormd. create new river deltas along the beaches