science
...rtage could hardly be avoided.Ever since the Industrial Revolution took place two hundred years ago,every day, thousands of factories had been established in every corner of the world.The productivity was indeed reinforced vastly during this reformal era.The natural resources, however, was being overused,at the same time.That is to say,we can not turn a blind eye to the decreasing resource on our planet,on which water is the vitalest one for us,when enjoying the various commodities produced by consuming it. If water shortage,or shall we say,the over-exploration of natural resources,were the price we paid for economic prosperity,as some claimed,the great amount of water wasted by mainkind should never be excused.From bathroom in North America to toilets in UK,‘save water ’is eye-catching everywhere. Nevertheless, we seldom pay attention to this warning. For a single person,to use more water than that actually needed may not worth mentioning, yet, it would become a disaster when it come to all citizens living on this global village.In a word, lacking o...