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Think marine processes of erosion, transportation, deposition (a possible structure?) and reasons for those (think factors of winds, waves and currents)

And tie in subaerial processes along the way, such as mass movement eg rockfalls, slumping. 

To explain the processes remember to refer to the factors of geology, human use of the coast (eg coastal management, settlements), possibly vegetation. 

Remember to refer to all of the resources somewhere in your answer and cross reference between them if possible.