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You answered "C". Click "CONTINUE" to proceed to the next question.
Interesting fact:
Old Faithful is a cone geyser in Yellowstone National Park. It gets its name from a predictable eruption schedule, having erupted every 44 minutes to two hours since 2000. In the 1800s, a Civil War general and his men used the geyser to clean their garments.
Fact Lab
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