读某区域等高线地形图,分析回答。
(1)图中字母A 处是________ 山脉,其东西两侧分别为____      ______ 和_____      _____ 地形。
(2)A山脉东侧地区在发展农业生产时不利因素主要有哪些?西侧地区的最突出的环境问题是什么?
                                                                                                                                                              
(3)B、C两城市周围地区要发展农业生产,主要发展哪些部门?
                                                                                                                                                               
(4)C城市最初形成和发展的有利因素是什么?目前其化学工业十分著名,其发展的有利条件是什么?
                                                                                                                                                             
                                                                                                                                                            
 
(5)制约该地区经济发展的主要自然因素是什么?
                                                                                                                                                             
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