Not quite sure what you're asking, but erosion and deposition do create land forms. For example: erosion along the coastline may result in the formations of arches, stacks, stumps, wave cut platforms, caves, etc. Deposition, different amount of it and in certain areas, under the influence of either destructive or constructive waves, will form beaches - ones with a lot of beach, through a lot of deposition, or slopes beaches where destructive waves have crashed upon the beach. Hope this is what you're looking for.
So to clarify is the geographer "human" or is it geographing humans
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I'm not sure i can understand that passage
True. The Jakota Triangle is a place in Eastern Asia and Taiwan is a part of the Jakota Triangle.