The seafloor spreading hypothesis indicates what as the primary cause of continental movement?
A)volcanism in the ocean crust
B)convergence of tectonic plates
C)the formation and destruction of ocean basins
D)the convection of mantle heat
E)the decay of radioactive isotopes
C
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The biggest concentration of Christian congregations in the first and second centuries is in modern day
A) Turkey. B) Norway. C) Germany. D) United Kingdom. E) Saudi Arabia
This is the first type of cloud an observer will see when a warm front is approaching
A) low-level stratus. B) nimbostratus. C) altostratus. D) cirrus.
This figure shows what will happen as a seismic wave moves from a material of one density to a material of a different density
Indicate which rock is a high or low density material by matching the correct choice to the correct material based on the refraction of the seismic wave. A) Low density material B) High density material 1) A 2) B
Where did the U.S. conduct nuclear tests between 1946-1958?
A) Solomon Islands B) Marshall Islands C) Samoa D) Tonga E) Palau