The evidence showed a catastrophe in the late Cretaceous period might have ended the age of prehistoric creatures.
证据显示,白垩纪晚期的一场灾难结束了这些史前生物的时代。
Scientists believed the hit of an asteroid was the most likely reason as it can result in a series of sudden climate changes such as volcanic eruptions, crustal faults and generate radioactive substances that cause the dinosaurs to die out.
科学家们认为小行星撞击地球是造成恐龙灭绝最有可能的原因,因为那可以造成一系列的气候突变,例如火山喷发、地壳断层和产生放射性物质等等,从而导致恐龙灭绝。
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