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17 July, 18:59

What is required for an ocean trench to form?

A. Subduction

B. Submarine canyons

C. Erosion

D. Passive margins

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Answers (2)
  1. 17 July, 20:31
    0
    I believe it's A, Subduction.
  2. 17 July, 20:59
    0
    A. Subduction
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