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.
Length of global mid-ocean ridge system. The entire global mid-ocean ridge system in the oceans is 49,700 miles (80,000 km) long. It has a continuous mountain system that is 40,400 miles (65,000 km) long making it the longest mountain range on Earth. Section of the mid-ocean ridge system. on the ocean floor, NOAA.