If Wegener could have explained _____________ his theory of continenetal drift might have been moere widely accepted in his day

Sonar contributed to information about the ocean bottom by

A ___________ is an underwater mountain range

A ______ runs through a mid ocean ridge

According to the theory of sea floor spreading new sea floor _____________

___________ causes the emergence of a new sea floor

Evidence of seafloor spreading includes

The theory of plate tectonics unites the theroy of seafloor spreading and the theory of continental drift

According the the theory of plate tectonics the lithosphere consists of

Mid ocean ridges, rift valley and trenches are thought to

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