Discussion
Assertion (A): Flood dominant estuaries tend to accumulate sediment over time.
Reason (R): The shorter stronger flood tide transports more sediment landward than the ebb returns seaward.
Answer: B
Both are true and the reason gives the mechanism, and dredging and reclamation can shift an estuary into this state. The change is often unintended and is difficult to reverse. Channel deepening can tip the balance towards import.
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