正在加载视频...
视频加载失败
EARTH HAS A COSMIC CLOCK. Earth's climate doesn't stay exactly the same forever. Over thousands to hundreds of thousands of years, Earth's orbit and orientation in space slowly change. These changes are called the Milankovitch cycles. There are three major cycles: ECCENTRICITY Earth's orbital shape changes from more circular... show more
0 条评论
暂无评论
原始帖子的评论将显示在这里
