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D. is the correct answer.
Answer:
The crust broke up because of the convection currents, formed tectonic plates, and is slowly pushed on the surface until it collides with another plate and subducts.
Explanation:
This image gives us the basics of how the plate tectonics theory works. The material in the upper mantle is cooler and denser than the material in the lower mantle, so it drops down and it pushes the hotter and less dense material up. This creates a circular motion in the mantle, and this motion creates enormous pressure on the crust above it and breaks it up.
As the crust is broken up, magma is rising constantly for millions of years, so the new magma pushes the old solidified one further away. This also pushes two pieces of crust away from each other. As the crusts move away, they eventually collide with another plate, and either gradually merge with it, or a subduction zone is created. In the latter, the crust moves below another crust and into the mantle, where it gets melted and recycled.
The answer would be A. Please mark brainliest
Answer:
Explanation:
The Earth's interior is divided into three major layers. These are the crust, mantle, and the core. The crust is hard and brittle and it extends from the surface of Earth all the way to the Moho. The moho is about 6miles below the seafloor or 22 miles under the surface of the continents. After the moho is the mantle and After the mantle is the core. The mantle is divided from the core by the Gutenberg discontinuity.
