| http://www.w3.org/ns/prov#value | - Description: USGS Scientist-in-Charge of Yellowstone Volcano Observatory, Jake Lowenstern, answers the following questions to explain volcanic features at Yellowstone: How do we know Yellowstone is a volcano?, What is a Supervolcano?, What is a Caldera?,Why are there geysers at Yellowstone?, and What are the other geologic hazards in Yellowstone?
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