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Explanation:
The correct answer is
“Sea mountains form a thriving ecosystem of underwater plants and animals, some of which have never been documented by scientists.”
Answer:
<em>going or being transported from place to place.</em>
<em>hope this helps</em><em> </em><em><</em><em>3</em>
When we say chronological order, this is the type of organization wherein events are arranged according to the time they happened. Therefore, this would be useful to the writer in order to make the readers understand any happenings that occurred previously. The answer would be the second option.