Last Updated：2025/11/21
Sentence
地質学者たちは、有機物や硫化物を多く含む黒色頁岩の層を発見し、そこには多数の化石化した微生物と黄鉄鉱の塊が含まれていた。
Quizzes for review
Geologists discovered a seam of black shale that contained abundant fossilized microorganisms and pyrite nodules.
See correct answer
Geologists discovered a seam of black shale that contained abundant fossilized microorganisms and pyrite nodules.
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