Main Ideas
- Underground storage would limit evaporation loss.
- Keeping the demand for irrigation water in arid and semiarid areas down while still meeting the world’s future food requirements can be supported by supplying “virtual water” to those places.
- The notion of virtual water may sound initially like a mere accounting device, but provision of goods.
- Whatever benefits the world may accrue from virtual-water transfers, the populations of growing cities need real, flowing water to drink, as well as for hygiene and sanitation.
- The ever expanding demand for urban, water-based sanitation services can be reduced by adopting dry, or low-water-use, devices such as dry composting toilets with urine separation systems.
- Essentially, civil engineers can employ this technology to decouple water supplies from sanitation systems, a move that could save significant amounts of freshwater if it were more widely employed.
- During reverse osmosis, salty water flows into the first of two chambers that are separated by a semipermeable (water-passing) membrane.
- Despite the improvements in energy efficiency, however, the applicability of reverse osmosis is to some degree limited by the fact that the technology is still energy-intensive, so the availability of affordable power is important to significantly expanding its application.
- Policy makers hold a lot of power when it comes to water resource management.
- 1 out of 6 people don't have access to enough safe freshwater.
- The lack of access to water leads to disease, starvation, death and political instabilities.
- An increase in droughts are causing shortages of freshwater in developed nations.
- Exporting food or commercial goods can help countries with little water because the country no longer has to use water to create those products. This is known as virtual water.
- Only 3% of water on the planet is freshwater.
- Desalination plants creates new sources for freshwater.
Author's Main Idea |
Many developing countries are struggling with obtain fresh water. There is only three percent of freshwater in the world.Future generations will be facing water scarcity some undeveloped countries are already have. Getting fresh water is a problem we should be addressing with long term solutions not short ones.Global freshwater resources are threatened by rising demands from many quarters. Growing populations need ever more water for drinking, hygiene, sanitation, food production and industry. Climate change, meanwhile, is expected to contribute to droughts.Policymakers need to figure out how to supply water without degrading the natural ecosystems that provide it. Existing low-tech approaches can help prevent scarcity, as can ways to boost supplies, such as improved methods to desalinate water. But governments at all levels need to start setting policies and making investments in infrastructure for water conservation now.
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My Reflection |
It's very sad that some people have no access to freshwater. This a sign to start conserving water. This means limiting our used it of water. The best way to this is by putting water restrictions such no more watering lawns because to be honest that's useless. We should also start charging the way we charge for gas. Water is precious it's not cheap and we should not treat as such. Water is becoming scarce. It's just a matter of time when freshwater is deplete from the entire world and we will longer have access to freshwater.
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