According to the question, there is a geological site that has some earthquake activity with a mountain range but there's no trenches when a person looks offshore.
This is a type of continental-continental convergent boundary because when two continental plays converge, they collide and become mountains.
With the new inventions of fossil fuel, air pollution has soared to new heights. Factories and power plants are also a huge part of it along with the oil industry that is wrecking the oceans.