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Match each cause of erosion with its category.
List I
A. Sea level rise
B. Dam construction upstream
C. Harbour jetty interception
D. Storm sequence in one winter
List II
1. an anthropogenic interruption of drift
2. a natural driver acting over decades
3. a short term fluctuation not a trend
4. an anthropogenic reduction in supply

  • A.A-3, B-1, C-4, D-2
  • B.A-2, B-4, C-1, D-3
  • C.A-4, B-2, C-1, D-3
  • D.A-2, B-4, C-3, D-1

Answer: B

Separating the natural drivers from the human ones matters greatly for choosing a response. Only some of them can be addressed at their source, and the rest must simply be accommodated instead. Sea level rise is not amenable to local intervention.

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