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What drives the ice age cycle? Between 3 and 1 million years ago, ice ages followed a 41,000-year cycle. Two studies provide new explanations for this periodicity.(ATMOSPHERE)The exposure of Earth's surface to the Sun's rays (or insolation) varies on time scales of thousands of years ...
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but it was also compounded.What the Sahara experienced was a sort of runaway drying effect.As I said, the monsoon migrated south—so there was less rain in the Sahara.The land started to get drier—which in turn caused a huge decrease in the amount of vegetation, because vegetation doesn...
Comparing the global set of temperature records with the levels of CO2 in theancient air bubbles trapped in ice coresreveals that global average temperatures started to rise at least a century after CO2 levels began to creep up. That's the reverse of what seems to have happened in Antarctica...
What the Ice Age Left(1918) 类型:纪录片/短片 制片国家/地区:美国 上映日期:1918 IMDb:tt0009788 豆瓣评分 暂无评分 看过 评价: 写短评 写影评 分享到 推荐 What the Ice Age Left的演职员· ···(全部 1) Robert C. Bruce制片人 What the Ice Age Left的图片· ···(添加图片)...
百度试题 题目What was characteristic of the "Little Ice Age" A.Cold and damp climate.B.Change in geographic conditions.C.World-wide drought.D.Reduction of water resources. 相关知识点: 试题来源: 解析 A
1What has happened since the and of the Ice Age A.Many species have moved further north.B.Many new species have come into existence.C.Many species have developed a habit of migration.D.Many species have become less sensitive to climate. 2What has happened since the end of the lee Age ...
What the Ice Age did was to eradicate the abundant mammalian life in the Northern Hemisphere.的中文意思?相关知识点: 试题来源: 解析 在冰河世纪,是什么原因致使北半球大量的哺乳动物遭到灭绝? 分析总结。 在冰河世纪是什么原因致使北半球大量的哺乳动物遭到灭绝...