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Which of the following structures is designed to prevent or retard shoreline erosion?


A) beach nourishment
B) groin
C) seawall
D) All of these structures prevent or retard shoreline erosion.
E) Both the groin and seawall prevent or retard shoreline erosion.

F) A) and E)
G) D) and E)

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Why do coastlines tend to become more straight (linear) with time? Discuss the processes that contribute to the formation of a smooth coast.

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Coastlines tend to become more straight ...

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Erosional coasts are characterized by features of accumulated sand/pebble/rock that are eroded elsewhere and deposited on shore where longshore currents slow.

A) True
B) False

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Groins are constructed for the purpose of maintaining or widening beaches that are losing sand.

A) True
B) False

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The most biologically productive part of a salt marsh would be the:


A) barrier flat.
B) dune.
C) high marsh.
D) low marsh.
E) lagoon.

F) A) and D)
G) B) and E)

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Which of the following materials would you expect to be found on the steepest beach?


A) coarse sand
B) fine sand
C) large gravel
D) small pebbles
E) cannot be determined based solely on particle size

F) A) and C)
G) None of the above

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The most common barriers constructed along a coastline are:


A) breakwaters.
B) groins.
C) jetties at harbor entrances.
D) seawalls.
E) spits.

F) None of the above
G) B) and D)

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