Climate change and its impact on water cycle What is water stress? The water stress refers to a twofold situation: when the demand for water exceeds the current available resource; when the poor quality of water restricts its use. It frequently occurs in areas with low rainfall and high population density or in areas where agricultural or industrial activities are intense. Even where sufficient long-term freshwater resources exist, seasonal or annual variations in the availability of freshwater may at times cause stress. Water stress causes deterioration of fresh water resources in terms of quantity (aquifer over exploitation, dry rivers, etc.) and quality (eutrophication, organic matter pollution, saline intrusion, etc.). Such deterioration can result in health problems and have a negative influence on ecosystems. The industries are also concerned, for the availability of water proves to be crucial within the industrial process, especially for water-intensive industries. Water scar
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