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Question
The author refers to a "conveyor belt” in order to
Options:
A .  Illustrate the effects of convection in the mantle
B .  Show how temperature differences depend on the positions of the continents
C .  Demonstrate the linear nature of the Mid-Atlantic Ridge
D .  Describe the complicated motions made possible by back-coupling
Answer: Option A
:
A
The author mentions in the first paragraph that “Theoretically, this convection would carry the continental plates along as though they were on a conveyor belt and would provide the forces needed to produce the split that occurs along the ridge.” Thus it is evident that a conveyor belt is referred in order to illustrate the effects of convection in the mantle. Thus, answer option (a) is the correct answer choice.

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