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global issue
water
| Term | Definition |
|---|---|
| physical water scarcity | a lack of water; in many places around the world; geography and human activities and deforestation can cause the physical ~ |
| water scarcity has impact on society | wipe out crops and livestock, causing food shortage; political unrest; economy decays |
| Economic water scarcity | economic ~ is caused by the lack of infrastructure and unequal distribution of water. FOR INSTANCE, people in slums may have to pay much higher price for water supply. |
| groundwater | deep under the ground into the porous rock. |
| Water footprint | The total volume of freshwater that has been used and polluted by human. |
| Virtual water | The amount of water that is consumed or polluted but produces a product . For example, the water that is used to grow crops. |
| Hydroelectric power | Can cost a huge amounts of water by using hydroelectric turbines. Must have consistently high water levels to operate efficiently; water evaporates much faster from reservoir than from rivers. |
| Desalination | the process of removing salt from seawater. Needs large amounts of energy. |
| personal solutions | eating food from lower part of the food chain; do not use bottled water; more water-efficient appliances; reusing water |
| community solutions | some cultural ideas that use large amount of water should be get rid of. |
| grey water | water that people consider dirty t and unusable. However, we can use it in many other places. |
| structural solutions | support the development of water infrastructure. |