10、冰河时代是如何形成的? 据说,7000万年以前,地球上一片葱绿,恐龙统治着世界,到处都是棕榈树复盖的热带丛林,湿度和温度非常高,在西伯利亚北部的海洋中甚至可以赤身游泳,这种情况以前大约保持了5亿年,然而,不知什么原因,这个四季如春的“天堂”突然被破坏了,温度急剧下降,南极开始形成冰川,这就是被地质学们称为“冰河时代”的 It is said that 70 million years ago, a greenery on earth, the dinosaurs ruled the world, covered in tropical jungle all over the palm trees, humidity and temperature is very high, even in the northern part of Siberia, the ocean or even However, for some reason, this “paradise” of spring has suddenly been destroyed, the temperature drops sharply, and the Antarctic begins to form a glacier, which is what geologists claim For the “Ice Age”