With time, the needs of people on the planet has grown a tremendous way, although the atmosphere, the oceans and the continents now no greater moment newborn humans. There are already more than 1 billion people live without adequate renewable freshwater resources. Approximately 2/3 of the Earth's fresh water used for agriculture. In the next half century, while personal incomes rose, people will look to buy these crops need more water. Cities and industries will require a lot of water 3 times the amount of water available in the developing countries
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