<u>Answer:</u>
<em>A. Mantle convection
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<u>Explanation:</u>
Ridges are formed over the divergent plate boundaries, it can be pushed by the mantle plume volcanism originated by the core mantle boundary at the Asthenosphere region over the divergent plate boundary. Seafloor spreading is the one of the evidences of plate tectonics theory. Subduction of the plate is the result of ridge push and slab pull, oceanic plate is less dense so its under beneath the high denser continental plate.
Answer:
Block mountains are formed by the movement of large crustal blocks when forces in the Earth's crust pull it apart. ... Volcanic Mountains are formed when molten rock (magma) deep within the earth, erupts, and piles upon the surface. Example of block mountain is Sierra Nevada mountains.
Explanation:
<em>hope</em><em> </em><em>it'll help you</em><em>.</em><em>.</em><em>.</em>
