mhahn.weebly.commhahn.weebly.com/uploads/3/1/3/6/31364453/plate_tectonics_readi… · This is...
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mhahn.weebly.commhahn.weebly.com/uploads/3/1/3/6/31364453/plate_tectonics_readi… · This is because new crust continually forms from molten material at the ridge. The oldest crust