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What discovery about the ocean floor is associated with the seafloor spreading ?
choices:
A. Mountains are denser than the mantle
B. The rotational poles of the Earth have Migrated
C. The crust of the continents is denser than the crust in the ocean
D. The crush of the ocean is very young relative to the age of the crust of the continents ​


Sagot :

Answer:

C

Explanation:

What they discovered was that the magnetism of the ocean floor around mid-ocean ridges was divided into matching “stripes” on either side of the ridge. The specific magnetism of basalt rock is determined by the Earth's magnetic field when the magma is cooling