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Part of the recycling of seafloor material includes its

destruction. This happens-
A through weathering and erosion of exposed rock
layers
B as a result of violent and frequent volcanic activity.
C at trenches where rock material is subducted.
D when elements in rock are rearranged chemically.

User JAAD
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C. At trenches where rock material is subducted
User Pts
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C. At trenches where rock material is subducted
User Satyadeep
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