wrote her letters in a colloquial style / the broken syntax and casual enunciation of conversational English Similar: informal (used of spoken and written language)
Best Answer: The mid-oceanic ridge can be described as the longest mountain range. It includes the Mid-Atlantic ridge, and all other such ridges. They form a complete system that is 65000 km long. The Mariana's Trench is the deepest. It's 11.03 kilometres deep. I don't know how you define underwater mountain.
The Alaska Range is perhaps the most well-known mountain range in Alaska. It is home to Denali National Park and the giant mountain itself, Denali (you may know it better by its white-man name, Mt. McKinley).