Question

Distinguish between Marine Deep and Marine Trenches​

Answer 1

Answer:

mid ocean ridge is a divergent boundary where plates are moving apart, An ocean trench is a convergent boundary where plates are moving together. ... An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma.

Explanation:

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Answer 2

Answer:

The deep sea or deep layer is the lowest layer in the ocean, existing below the thermocline and above the seabed, at a depth of 1000 fathoms (1800 m) or more.

The Mariana Trench is part of a global network of deep troughs that cut across the ocean floor. They form when two tectonic plates collide. At the collision point, one of the plates dives beneath the other into the Earth's mantle, creating an ocean trench.