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Passage II

16. One of the main purposes of the last paragraph is to state that the:

  • A. gashes in the rift valley continue to increase in width.

  • B. seafloor of Atlantic has cooled.

  • C. entire Atlantic seafloor has issued from the gashes in the rift valley.

  • D. volcanoes on Earth’s dry land have created the newest, youngest pieces of Atlantic seafloor.