According to the theory of plate tectonics,
a the earth’s crust is in motion due to sea...
According to the theory of plate tectonics,
a the earth’s crust is in motion due to sea floor spreading that occurs
b the earth’s crust is stationary and the continental land masses have always been
where they are currently
c the earth’s crust used to be completed covered by water
d the earth’s crust covered the whole planet with barely any water
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