The first paragraph serves mainly to

Explain how a scientific device is used.

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Note a common misconception about an event.

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Describe a natural phenomenon and address its importance.

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Present a recent study and summarize its findings.

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Solution

The correct option is C Describe a natural phenomenon and address its importance.
In the first paragraph the author talks about internal waves,describes it and also asserts its importance in ocean water dynamics. Thus option C is the correct answer. Options A,B,D are incorrect.

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The first paragraph serves mainly to

The correct option is C Describe a natural phenomenon and address its importance.In the first paragraph the author talks about internal waves,describes it and also asserts its importance in ocean water dynamics. Thus option C is the correct answer. Options A,B,D are incorrect.

The correct option is C Describe a natural phenomenon and address its importance.
In the first paragraph the author talks about internal waves,describes it and also asserts its importance in ocean water dynamics. Thus option C is the correct answer. Options A,B,D are incorrect.