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Physical Science with Earth and Science
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Coastal Processes and Sea-Level Change
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Physical Science with Earth and Science
9.116 Coastal Processes and Sea-Level Change
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A storm erodes a dune, making it lower. During the next storm, waves overtop it more easily and remove even more sand. What systems concept is illustrated?
A
A negative feedback, because erosion immediately rebuilds the dune.
B
A closed system, because no energy or sediment crosses the dune boundary.
C
A random event with no cause-and-effect relationship.
D
A positive feedback, because the first erosion makes later erosion more likely.
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