Complex sentence: As Chile is located in an active continental margin, it hosts a large number of subduction volcanoes and nearly all of the territory of Chile is subject to earthquakes arising from strains in the subducting Nazca and Antarctic Plates or shallow strike-slip faults.
Split into simpler sentences: As Chile is located in an active continental margin, it hosts a large number of volcanoes. Nearly all of the territory of Chile is subject to earthquakes arising from strains in the Nazca and Antarctic Plates or shallow strike-slip faults.