The basic theory of plate tectonics is that along seafloor spreading zones, the continents are separating from one another. As they spread apart, magma comes to the surface and becomes new continental crust. As the tectonic plates move away from spreading zones, they collide with one another.
Answer:
I think it's C, but I'm not a 100% sure,
so if you could.. please correct me if I'm wrong.
Explanation:
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Polaris directly over head.
Thats the only thing I can think of if you have options I could answer better.
Answer:
heat, pressure and water content
Explanation:
Magma formation are affected by heat content, pressure offered by the overlying rock and water content