What are the effects of global warming on fresh water?



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    Global warming is going to contribute to fresh water shortages around the globe, accentuating other factors that are leading to fresh water crises. For one thing, higher global temperatures will mean that water evaporates faster, making droughts worse in many parts of the world. Some places are already experiencing worse droughts due to global warming, such as parts of Africa, Asia, and the Caribbean; scientists also warn that the mid western United States will be vulnerable to increased drought in the future. At the same time, fresh water supplies are decreasing in other parts of the world because global warming is melting the glaciers that have historically fed major streams and rivers. This is an especially huge problem in India and surrounding parts of Asia, where about one sixth of the world’s population depends on fresh water sources fed by the glaciers of the Tibetan Plateau. These glaciers are rapidly melting, and scientists estimate that many of them may be reduced to 20% of their original size by the year 2030, due to global warming.

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