What is the longest mountain system on Earth when underwater ranges are included?
Correct answer: C. The global mid-ocean ridge system
- A. The Himalaya–Karakoram system
- B. The Alpine–Himalayan belt
- C. The global mid-ocean ridge system
- D. The Andes
Explanation
The globe-encircling mid-ocean ridge system (about 65,000 km) is Earth's longest mountain chain.
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