Plate Tectonics

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Which suggested to early cartographers that the continents were once joined?

Which is a convergent boundary that does not have a subduction zone?

The weight of a subducting plate helps pull it into a subduction zone in which process?

Which observation was used in formulating the hypothesis of seafloor spreading?

What structure can form as a result of a divergent boundary?

What process creates deep sea trenches?

Which feature forms along a continental-continental boundary?

What was Wegener's hypothesis called?