Where are most or the Earth's active volcanoes concentrated at present?

Solution (By Examveda Team)

In Pacific Ocean, the Earth's active volcanoes concentrated at present. Volcanic eruptions occur only in certain places and do not occur randomly. This is because the Earth's crust is broken into a series of slabs known as tectonic plates. Most volcanoes are found along a belt, called the "Ring of Fire" that encircles the Pacific Ocean.