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Question 36: A. As that segment of ocean flow, known as the Gulf Stream, pushes north, it cools and becomes denser and eventually sinks, forming the so-called deepwater that flows back southward along the ocean floor toward Antarctica.
B. The warm, salty waters of the tropical Atlantic cruise northward along the eastern coast of the United States before darting toward northwestern Europe.
C. It also determines several climatic features, such as the latitude at which a key tropical rain belt is located, which impacts water supplies, precipitation for agriculture and the health of tropical ecosystems.
D. This cycle, called the Atlantic Meridional Overturning Circulation, plays a key role in moving heat around the planet as well as nutrients throughout the ocean.
Of the given sentences, B is the only one that makes a good start to the paragraph. Sentence A refers to 'that segment of ocean flow', C starts with 'it also', and D refers to 'this cycle'; so, these are unlikely to be the first sentence of the paragraph.
Now, sentence B talks of the waters of the tropical Atlantic cruising along eastern US and going towards Europe. Clearly, sentence A, which makes a reference to 'that segment of ocean flow' is the one that follows B.
Sentence B explains how the Gulf Stream, after the push northward, sinks and 'flows back southward'. Sentence D, which labels this cycle 'Atlantic Meridional Overturning Circulation' is the obvious one to follow B.
Sentence D explains the effects of the Atlantic Meridional Overturning Circulation on the planet. Sentence C adds to this.
So, BADC is the correct order.
The question is " Arrange the sentences in the correct order "
The order is BADC
Choice D is the correct answer.
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