[問題] 美國東岸濱外沙洲成因為何?
閒來上GOOGLE MAPS晃晃
發現美國東岸 北自長島 南至佛羅里達 大西洋邊常有細細長的沙洲與潟湖
而且離大陸岸 20~30km遠的都有
有沒有相關的成因 或說明阿?
--
"Economics is a science which studies human behavior as a relationship
between ends and scarce means which have alternative uses."
Robbins(1932)
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