Read the text. The Mid-Ocean Ridge 1. You've probably heard of the Himalayas, the Andes the Appalachian Mountains, and the Rocky Mountains. After all, they're 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. 2 So, why isn't 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 What is the main focus of the text? why the mid-ocean ridge system is more important than other mountain ranges why people haven't studied the mid-ocean ridge system what the mid-ocean ridge system is like