【出展引用リンク】：
http://www.youtube.com/watch?v=QDqskltCixA
The Earth is formed by accretion of spatial particulates and large masses and eventually formes an outer crust. Video follows with speculation of early plates and land masses and their movement through time. clip taken from national geographics "HOW THE EARTH WAS MADE"
カテゴリ: 教育
タグ: earth plate tectonics planet solar system plates time
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