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The abyssal plain.

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What are the deepest part of the ocean floor?

The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.


What is a long deep steep depression in the sea floor where subduction occurs called?

A trench.


Does plants grow on the floor of deep sea biomes?

yes they do called coral reef


What is the deepest known portion of the ocean floor called?

Challenger deep.


How many floor in Deep sea floor?

99 floors


Why are submersibles valuable deep sea research?

Deep sea submersibles help get research from the ocean floor.


Where are deep sea crabs found?

On the ocean floor


Deep sea basin definition?

A deep sea basin is a depression of the sea floor more or less equidimensional in form and of variable extent.


The bottom of the ocean is called?

The bottom of an ocean is typically called the seafloor. Although the seafloor can have variant geographical features such as mountains or volcanos, a normal, and flat terrain is called the seafloor.


What is fishing far out at sea called?

Deep sea fishing fishing far out at sea is called deep sea fishing .


What is the ocean bottom called?

The deepest parts of the ocean floor are caused by plate tectonic subduction and occur where the sea floor sinks back into the mantle in a subduction zone. These areas are called deep sea trenches and the Challenger Deep in the Mariana Trench in the Pacific is the deepest known point in Earth's oceans.


What is deep sea plain?

A deep sea plain, sometimes called an abyssal plain is a wide, almost level area that covers about two-thirds of the entire ocean floor. There is a complete absence of river sediments on this plain.