水是生命之源,没有水就没有生命,水在人类文明发展史中,始终起着至关重要的作用。世界文明古国埃及、古巴比伦、印度和我国,无不是在大江大河流域中发展起来的。地球上难以计数的江河,就似无数天然输水管道,并且在江河流域往往会形成众多的湖泊、大片的湿地和丰富的地下水,为人类提供便于开发利用的水资源。《地球上的水资源》也让青少年懂得每一滴水承载着一个生命!水是人类生存之根本!
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