The geologists studied the hydrothermal springs in Yellowstone., The astronomers studied the atmosphere around the Space Station., The paleontologist was intrigued by the chronology of the fossils., The electrician used his voltmeter and antique electroscope today., Mr. Stevens visited a geothermal power plant in Alaska., Our ionosphere circulates 50-250 miles above the earth.,

10.7 6 Hangman Sentences

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