Question

review the text.
the mid - ocean ridge
youve probably heard of the himalayas, the andes, the appalachian mountains, and the rocky mountains. after all, theyre impressive mountain ranges. but you might not have heard of the mid - ocean ridge system—despite the fact that it forms the most extensive chain of mountains on earth.
so, why isnt a mountain range this big more familiar? perhaps because more than ninety percent of the mountain range lies in the deep ocean. the massive mid - ocean ridge system wraps around the globe like seams on a baseball, stretching an impressive 65,000 kilometers. the majority of the
order the key details to create a summary of the text.
mid - ocean ridges occur at divergent plate boundaries, where there is major volcanic activity.
the mid - ocean ridge system remains mysterious, since only a tiny fraction has been explored.
mid - ocean ridges spread at different rates, leading to different physical features.
the mid - ocean ridge system is earths biggest mountain chain, although the vast majority is underwater.

Explanation:

First, introduce the mid - ocean ridge as Earth's biggest mountain chain mostly underwater. Then, mention its mysterious nature due to limited exploration. After that, state its location at divergent plate boundaries with volcanic activity. Finally, note the different spreading rates and resulting physical features.

Answer:

1. The mid - ocean ridge system is Earth's biggest mountain chain, although the vast majority is underwater.
2. The mid - ocean ridge system remains mysterious, since only a tiny fraction has been explored.
3. Mid - ocean ridges occur at divergent plate boundaries, where there is major volcanic activity.
4. Mid - ocean ridges spread at different rates, leading to different physical features.