论文部分内容阅读
每年都有不少科学家到南极进行科学探险，他们往冰川深处打钻，采集长长的“冰棒”———冰芯。为什么这么做呢？因为神秘的全球变暖现象的原因就冻结在其中。从１９７５年以来，地球的气温已经上升了０．５℃，这个数字不大，但是就是这么一点小小的气温变化，就使得许多地区
Every year, many scientists travel to Antarctica for scientific exploration. They drill into the depths of glaciers and collect long ice popsicles. Why do you do this? Because of the mysterious phenomenon of global warming to freeze in them. Since 1975, the earth’s temperature has risen 0.5 ℃, this figure is not large, but it is such a small change in temperature, makes many areas