lake
Lakes are relatively calm in the inland depression, there is a certain area, not directly related to the occurrence of marine water. There are about 117 million lakes in the world, covering nearly 5 million square kilometers of the earth. In view of the history of the earth, the lake is only a temporary existence of water, will be silt and slowly landed; in addition to a few ancient lakes, such as Lake Baikal, the vast majority of lakes can only be traced back to the era of the Pleistocene glacier The ...