Lifeonearthdependsonwater,andthereisnosubstituteforit．T...
问题详情：Lifeonearthdependsonwater,andthereisnosubstituteforit．Thecurrentassumptionisthatourbasicneedsforwater—whetherfordrinking,agriculture,industryortheraisingoffishwillalwayshavetobemet．Giventhatpre...