Question

oceanic trenches can be found along some crustal plate boundaries this is evidence that there is tectonic activity at those locations what is likely to be happening at the plate boundaries​

Answer 1

Explanation:

oceanic trenches can be found along some crustal plate boundaries this is evidence that there is tectonic activity at those locations what is likely to be happening at the plate boundariesOcean trenches are found in every ocean basin on the planet, although the deepest ocean trenches ring the Pacific as part of the so-called “Ring of Fire” that also includes active volcanoes and earthquake zones. Ocean trenches are a result of tectonic activity, which describes the movement of the Earth's lithosphere.Trenches are formed by subduction, a geophysical process in which two or more of Earth's tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.The Pacific Ocean is shrinking and plates are descending below surrounding plates along its edges, hence the creation of trenches.The Mariana trench contains the deepest part of the world's oceans, and runs along an oceanic-oceanic convergent boundary. It is the result of the oceanic Pacific plate subducting beneath the oceanic Mariana plate.

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