摘要:28.读图并回答下列问题. (1)简述A海域的形成原因. (2)简析B地区荒漠化的成因. (3)C附近的河段流量稳定.简要分析其原因. (4)分析说明D山体垂直自然带复杂的原因.

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读下图,回答下列问题。
(1)图中山脉位于________板块。根据板块构造理沦,说明该山脉高度的变化趋势及理由。
                                                                                                                                                                
(2)若轮船沿该大洲西海岸并顺图示洋流航行,沿岸自然景观的递变反映了                        的地域分
     异规律,B地自然景观主要是                      ,其形态呈南北狭长的带状分布,主要原因是什么?
                                                                                                                                                                
(3)A附近海域是                            渔场(世界著名渔场),简述其成因。
                                                                                                                                                               
                                                                                                                                                               
(4)20世纪下半叶以来,A海域表层海水多次异常升温,造成气候反常,鱼群大量死亡。这一现象被称
     为                 现象。当该现象发生时,赤道附近的太平洋西岸气候如何变化?
                                                                                                                                                               
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