In ridge push, the mantle wells upward because of the
convection and elevates the edges of spreading oceanic plates. Because these
plates are higher at the spreading center, they are forced downhill due to
<em>gravity</em> and eventually flatten out to the ocean floor.
Answer: D- previous models
Explanation:
Because you always have to build off of other things to help make yours better and learn from the mistakes
Because there is no need for them
