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Keeping balance between the demand for water and the water supply has been increasingly contravertial topic in the world. While admitting enomous efforts have been made for it, I suppose, however, the global demand for water will not be met in the future. I have three reasons to support my idea.
Firstly, as global population has been rapidly growing for few decades, the demand for water has been increasing proportionately. When I was born, we had about 5 billion people on the earth. When I became an adult, we saw approximately 6 billion. And now, it is said that we will see more than 7 billion in total. It is clear that there has been significant growth of the demand for water.
Secondly, we have lost numerous water resources in past few decades. While we saw significant development throuout the the world, we also witnessed many water resources disappear as well. For instance, along the Amazon, Brazil, vast rainforest has been deversetated, which provided the Amazon with sufficient water while the officials in Brazil are celeblating its holding next Olympic games.
Some may argue that technology development would enable us to curve water usage. However, the impact of technology development have limitation. Howmuch water we can save, we need natural water resources any way. Even in ISS where astronaunts can survive for few months without water supply, they cannot make it for longer period.
Thus, taking into account the growing demand for water, the loss of water resources and the limited potential of technology development, I cannot supose that the global demand for water will be met in the future.