The video shows a man transporting a fish from a bucket of nice fish-friendly water to a container filled with an unspecified substance (we know it's not liquid nitrogen, as the temperature is shown at -35 in the beginning, which is too warm for nitrogen to still be in liquid form, no matter the unit).
A subduction zone is formed at a convergent plate boundary when one or both of the tectonic plates is composed of oceanic crust. The denser plate, made of oceanic crust, is subducted underneath the less dense plate, which can be either continental or oceanic crust.
Collsions of oceanic lithosphere and continental lithosphere at convergent boundaries form deep-ocean trenches. However, collisions of two plates made of continental lithosphere at convergent boundaries may cause large mountain ranges to form. Explain why the results of the two collisions differ Because when two plates collide they will both push up to make mountains.