Atrench is evidence of which kind of plate boundary? 1) uniform 2)divergent 3) convergent 4) transform

A trench is evidence of (3) Convergent plate boundary

Explanation:

Trenches are formed by subduction a geophysical process which involves the converging of two or more Earth's tectonic plates and the older denser plate is pushed beneath the lighter plate and deep into the mantle causing the seafloor  and outermost crust to bend and form a steep V shaped depression.

Geological features which occur at convergent boundary are as following:

they are known to reach a speed of 21 miles per hour

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