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Which evidence originally supported Hess's idea of seafloor spreading in 1968?
Younger rocks are closer to mid-ocean ridges.
The destruction of crust occurs at deep-sea trenches.
Oceanic rocks are pillow-shaped when formed.
Rocks across the ocean floor have alternating magnetic stripes.

Which country is the smallest island of the greater antilles

According ti the following map, what are the most common mineral resources found in the united states?

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted