Select the correct answer.
Over the last 250 million years, the world changed from a single land mass to a number of different continents. One reason for the change is
expanding ocean floors. What causes ocean floors to expand?
A. convergent plates
B. divergent plates
C. slab pull
D. uplift

Select the correct answer Over the last 250 million years the world changed from a single land mass to a number of different continents One reason for the chang class=