0. Where are most of the earth's active volcanoes concentrated?
Most of the Earth's active volcanoes are concentrated around the Pacific Ocean, in a region famously known as the "Ring of Fire."
This is a horseshoe-shaped zone that follows the edges of the Pacific tectonic plate.
It contains about 75% of the world’s active and dormant volcanoes.
It is also a zone of frequent earthquakes and tectonic activity.
Option A: Europe – Has a few volcanoes (e.g., Mount Etna, Vesuvius), but not the largest concentration.
Option B: Pacific Ocean – Correct. The “Ring of Fire” surrounds this ocean and holds the majority of active volcanoes.
Option C: Africa – Home to some volcanoes (e.g., Mount Kilimanjaro, Nyiragongo), but fewer in number.
Option D: South America – Has volcanoes in the Andes (e.g., Cotopaxi, Ojos del Salado), part of the Ring of Fire, but not the majority concentration.