What happens at all convergent plate boundaries?

Explanation:

At convergent plate boundaries two plates are moving towards one another and different scenarios are in play.

Most importantly, at these margins the crust is being destroyed.

Some of the features found at this margin include, oceanic trenches, accretionary wedges, volcanic islands, earthquakes

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.