Last Updated：2025/12/07
Sentence
地質学者たちは、白亜紀の堆積パターンを理解するためにダコタ層を研究している。
Quizzes for review
Geologists study the Dakota group to understand sedimentation patterns in the Cretaceous.
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Geologists study the Dakota group to understand sedimentation patterns in the Cretaceous.
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