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 mid ocean ridge systems are the largest geological features on the planet. The Mid-Atlantic Ridge (MAR) is a mostly underwater mountain range in the Atlantic Ocean that runs from 87Â°N-about 333km south of the North Pole-to subantarctic Bourvet island at 54Â°S.