The PEP compulsory chapter 3 "Water on Earth" ppt review courseware (1) explains the main reasons for the arid climate and the widespread desert in most of the region. (2) Briefly describe the main types of river supply in the region and their seasonal characteristics. [Analysis] Question (1), the picture shows the Tarim Basin, which is deep in the interior of the Eurasian continent and surrounded by high mountains. It is difficult for the sea water vapor to enter, so there is little precipitation. Question (2): The rivers in this area are mainly recharged by ice and snow melt, with the largest flow in summer; the second is groundwater recharge.
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