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Dwayne ventured out of the Crash Course studio to learn more about stratigraphy with @pbseons host Kallie Moore! We can see different features in this formation in Southwest Montana that tell us that this rock was once marine. Learn more about how to read the rocky layers of Earth’s biography in Crash Course Geology episode 16 -- out now! #geology #stratigraphy #learn #crashcourse
Crash Course171,500 次观看 • 2 个月前
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