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Answer:

Researchers aboard Alvin discovered the presence of hydrothermal vents on the ocean floor.

Explanation:

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The important discovery made by researchers Alvin is the  discovery of hydrothermal vents on the ocean floor.

Who is Alvin?

Alvin is a researcher who discovered hydrothermal vents when he explored the Titanic, and searched for a missing hydrogen bomb in the Mediterranean Sea.

The hydrothermal vents  occurs as a result of seawater percolating down through fissures in the ocean crust.

Thus, the important discovery made by researchers Alvin is the  discovery of hydrothermal vents on the ocean floor.

Learn more about hydrothermal vents here: https://brainly.com/question/9721509

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