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26 March, 01:27

At mid-ocean ridges,

A. the crust is older.

B. sea-floor spreading occurs.

C oceanic lithosphere is destroyed.

D. tectonic plates are colliding

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Answers (2)
  1. 26 March, 01:34
    0
    B. lava from the mantle pushes through spreading them apart
  2. 26 March, 01:45
    0
    B. is the answer because lava keeps moving away from the source, causing the whole sea floor to move.
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