Author(s): Jiro Kondo

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Abstract: It is clear that the world's population will reach 10 billion in the twenty-first century. Water is a substance necessary to maintain life. Life was born in seawater 3 billion years ago and later moved ashore. Thus, to maintain life, water is required. As shown in Table 1, however, 97% of the earth's water is seawater. Land water accounts for only 2.5%.

DOI:

Year: 1993