Movement of the tectonic plates.
oceanic trenches and volcanoes from the rising magma.
there are three ocean trenches in the Atlantic Ocean
It comes from sea mounts and ocean trenches.
Trenches
The Pacific Ocean has the deepest trenches.
Giant squid primarily live in deep ocean trenches.
They are called trenches.
Compared to ocean crust near deep-sea trenches, crust near ocean ridges is generally younger, thinner, and hotter. Ocean ridges are sites of active seafloor spreading where magma rises to create new crust, while deep-sea trenches are associated with subduction, where older, denser crust is pulled back into the mantle. As a result, the crust at ocean ridges is also less dense and more buoyant than the crust found near trenches.
in the ocean!
There are 26 oceanic trenches in the world: 3 in the Atlantic Ocean, 1 in the Indian Ocean, and 22 in the Pacific Ocean.... and more in the process!For more about ocean trenches visit the website I got this great information from:http://www.physicalgeography.net/fundamentals/10p.html
Deep ocean trenches are deep slits in the middle of the ocean. The pressure inside these trenches is unbearable. long, curved valleys along the edges of the ocean basin
trenches.