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confirm say continue increase dry gain continue be deplete conduct
be show alter warn be change see say examine pump
The USA's space agency NASA has that human activity is responsible for a massive redistribution of freshwater across Earth. It the redistribution is as populations shift and demand for food . In particular, equatorial regions were , while tropical areas and higher latitudes were water supplies. NASA warned that if this trend , many highly populated urban areas could struggle to find sufficient water in the future. NASA's claims the result of a 14-year study into shifting locations and resources of freshwater. It was part of a mission between 2002-2016 called GRACE, which is an acronym for Gravity Recovery and Climate Experiment.

Researchers say that the shifting freshwater patterns the result of human activity. Jay Famiglietti, a co-author of the research and the Senior Water Scientist at NASA's Jet Propulsion Laboratory, said: "The study that humans have really drastically the global water landscape in a very profound way." He that: "The human fingerprint all over freshwater availability. We it in large-scale overuse of groundwater. We see it as a driver of climate change." Professor Famiglietti at least 40 per cent of the 34 hot areas in the research were drier than two decades ago because of human activity, especially excessive groundwater for farming.

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