最近30从www.hoelymoley.com 2023 - 07 - 09 - t23:00:35z //www.hoelymoley.com/feeds/question/16457 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/16457 4 JohnWDailey //www.hoelymoley.com/users/4985 2019 - 03 - 13 - t05:11:23z 2019 - 03 - 14 - t18:21:02z

< p > 5500万年前,世界是一个丛林。如此高的温度、降水和湿度,生活可能激增。但4900万年前,极端的事情发生了:< a href = " https://en.wikipedia.org/wiki/Azolla_event " rel = " nofollow noreferrer " > < / >红萍事件,在冰形成两极。罪魁祸首吗?一种植物叫做< em >水蕨< / em >。在800000年,从这些植物光合作用和碳封存减少大气二氧化碳量< a href = " https://www.nature.com/articles/35021000 " rel = " nofollow noreferrer " >从3500 ppm到650年< / >。< / p > < p > < a href = " https://i.stack.imgur.com/aGu0q.png " rel = " nofollow noreferrer " > < img src = " https://i.stack.imgur.com/aGu0q.png " alt = "在这里输入图像描述" > < / > < / p > < p >[图从< a href = " https://www.nature.com/articles/35021000 " rel = " nofollow noreferrer " >大气二氧化碳浓度在过去的6000万年里)< / > < / p > < p >但这里真正的问题是,<强>做造成的冷却红萍事件创建一个主要的植物和动物物种的灭绝事件? < /强> < / p >

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