Transcription: Japan is in a geographically vulnerable part of the world. It lies on a subduction zone, where one tectonic plate on the Earth's crust is slowly being pushed beneath another, enabling molten rock to escape from below to erupt on the surface. Japan's island chain forms part of the Ring of Fire, an arc-shaped area bordering the Pacific where plate movement causes potentially devastating volcanoes and earthquakes. Many of Japan's mountains were formed by volcanic activity, and some are still active, posing an ever-present threat to its people and economy.
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