Answer:
Volcanoes and Earthquakes occur more frequently where tectonic plates meet or separate
Explanation:
Volcanoes do occur underwater at mid - oceanic ridges but it often occurs when the plates are separating and this usually forms new islands
Answer:
External/ internal migration.
Is this geometry? if so is there a picture i can look at to help you?
That would be the Himalayas and have the highest mountain range in the world.