Hello!
The Ring of Fire is part of the Pacific Ocean. :)
Scientific ocean exploration began in the 19th century, using wooden sailing ships. At that time, explorers had none of the technological sophistication and tools available today. A comparison of modern-day exploration with the late 19-century journey of the HMS Challenger<span>illustrates the progress that science has made in ocean exploration.</span>
Answer:
A landmass formed within a river is known as riverine islands. Riverine islands are formed when rocks and mud gets deposited in the river bed by flowing rivers.
It is called seismic waves. That should help:)
