Explain how the formation of new oceanic crust at divergent boundaries is balanced by subduction.

Through seafloor spreading.

Explanation:

Subduction balances the formation of new oceanic crust at divergent boundaries by the formation of new oceanic crust through seafloor spreading.  The oceanic crust sinks into the mantle which creases an empty space that can be filled with magma that is responsible for the production of new crust on that empty space of subduction zone so we can conclude from this discussion that formation of new crust balances at divergent boundaries  through seafloor spreading.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave

idk what happened..you tell