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Match each coastal inlet type with its origin.
List I
A. Ria
B. Fjord
C. Estuary
D. Lagoon
List II
1. a river mouth with mixing of fresh and salt water
2. a drowned river valley
3. a water body enclosed behind a barrier
4. a drowned glacial trough with a sill

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

Answer: C

The first two are inherited from past sea level and ice conditions rather than from present processes. The last two are defined by their water exchange rather than by their origin. The two classifications answer different questions.

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