With the rapid increase of population and the development of society and industry, many countries are facing a water shortage. A water shortage does not only result in a shortage of domestic water for people's lives, but also serious food shortages, impacts on eco systems and public health problems. Among other things, food shortages are particularly serious with about 800 million people currently suffering from malnutrition and the world will become in need of food to sustain 2.4 billion people by 2025 as a result of an increase in the percentage of developing countries. Various other problems are also emerging, including water pollution caused by insufficient sewage disposal capacity, an increasing number of people dwelling on floodprone lowland areas and resultant flood damage, etc., and there is growing concern that these problems including water shortages will become more serious in future due to the increase in the world population and the impact of climate change.
With the rapid increase of population and the development of society and industry, many countries are facing a water shortage. A water shortage does not only result in a shortage of domestic water for people's lives, but also serious food shortages, impacts on eco systems and public health problems. Among other things, food shortages are particularly serious with about 800 million people currently suffering from malnutrition and the world will become in need of food to sustain 2.4 billion people by 2025 as a result of an increase in the percentage of developing countries. Various other problems are also emerging, including water pollution caused by insufficient sewage disposal capacity, an increasing number of people dwelling on floodprone lowland areas and resultant flood damage, etc., and there is growing concern that these problems including water shortages will become more serious in future due to the increase in the world population and the impact of climate change.
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