Answer:
It shows what is happening with the Earth from a angle that helps us better understand what is occurring.
Step-by-step explanation:
For example, in the graph it shows a oceanic plate getting subducted under a continental plate. This can also help us know what event is occurring. Like, for this image it is representing volcanoes(subduction) which also means that it is a convergent plate boundary.
I hope this helped! :)