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The Ocean Ridge (also known as Mid-ocean ridge), which runs more than 40,000 miles on the sea floor of five oceans is the longes mountain chain in the world. The longest mountain range on dry land is the Andes, which stretch 4300 miles through seven countries in South America.

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Q: What is the longest mountain chain on the earth?
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Where are some of the longest mountain ranges on Earth found?

The chain of mountains that form the mid-ocean-ridges are the longest mountain chains in the world.


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i dont know.why dont you ask someone that is good at geography?


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