Question

What is called marine trench?​

Answer 1

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The Mariana Trench is named after the nearby Mariana Islands, which are named Las Marianas in honour of Spanish Queen Mariana of Austria, widow of Philip IV of Spain.

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Answer 2

Answer:

Mariana Trench, also called Marianas Trench, deep-sea trench in the floor of the western North Pacific Ocean, the deepest such trench known on Earth, located mostly east as well as south of the Mariana Islands.

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