奥妙无穷的水山东省教育学院柳若芍地球上的总水量为１３．８６亿立方千米，但其中的９６．５％集中在海洋里。地球上总水量的９７．４７％不是淡水，因此，难以直接饮用和灌溉。真正可供人类利用的淡水总量为２．５３％。在淡水中有６８．７％以固态水分布在人迹罕至的南... Mysterious water Shandong Institute of Education Liu Roushao Earth’s total amount of water on the earth 1.386 billion cubic kilometers, but 96.5% of them concentrated in the ocean. 97.47% of the total water on Earth is not fresh water, making it difficult to drink and irrigate directly. The total amount of freshwater that is truly available to human beings is 2.53%. 68.7% of freshwater is distributed in the inaccessible South with solid water ...