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NOVA: Arctic Dinosaurs 2008 무료 무제한 액세스
Dinosaurs are generally considered tropical animals. So what are their fossils doing north of the arctic circle? Paleontologists battle the fierce climate to find out if the arctic was warmer then than it is now, or the arctic was farther from the North Pole, or the dinosaurs were migratory animals, or if they were warm-blooded.
실행 시간: 60 의사록
품질: HD
해제: Oct 07, 2008
국가: United States of America
언어: English
