内容正文:
全球海陆分布
地球?
水球?
阅读书本P17“三分陆 七分海”内容思考:
2、读“南北半球的海陆分布”图,从南北半球看,陆地主要集中在哪个半球?海洋呢?
3、读“南北半球的海陆分布”图,北极地区和南极地区分别是以陆地还是以海洋为主?
1、世界上海洋和陆地各占全球总面积的百分比是多少?
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辩论:
如