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Topic: Fresh water


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 Fresh water - Wikipedia, the free encyclopedia
Access to fresh water is a critical issue for the survival of many species, including humans, especially in desert or otherwise arid areas.
All fresh water ultimately comes from precipitation of atmospheric water vapor, reaching inland lakes, rivers, and groundwater bodies directly, or after melting of snow or ice (see hydrologic cycle).
Fresh water is water that contains only minimal quantities of dissolved salts, especially sodium chloride, thus distinguishing it from sea water or brackish water.
en.wikipedia.org /wiki/Freshwater   (266 words)

  
 BBC News World World water crisis
Chronic water shortages are already affecting 4.5m people in Catalonia, where authorities are pressing for the construction of a pipeline to divert water from the Rhone in France to Barcelona.
Competition for water from the River Jordan was a major cause of the 1967 war.
An estimated 40% of the city's water is lost through leaky pipes built at the turn of the century.
news.bbc.co.uk /hi/english/static/in_depth/world/2000/world_water_crisis/default.stm   (1119 words)

  
 Fresh Water and Fresh Water Pollution Web Resources for Students
Oceans contain 97 % of the earth's water while the remaining 3 % is classified as freshwater.
Water and sediments taken from a pond or creek support an abundance of plant and animals, which can be sealed in a jar and observed for years to come.
The water cycle, the continuous movement of water from ocean to air and land then back to the ocean in a cyclic pattern, is a central concept in meteorology.
www.cdli.ca /CITE/water.htm   (1125 words)

  
 RV Fresh Water Systems
Once there is sufficient antifreeeze in the fresh water tank, turn on water pump and pump sequentially through each and every water fixture.
Would prefer to fill fresh water tank and "live off of it", using the onboard water pump.
It's used anytime you're hooked up to city water; or anytime you fill the fresh water tank.
www.rversonline.org /02WaterSystems.html   (919 words)

  
 EO Library: The Water Cycle
With other estimates, groundwater is sometimes listed as 22% and ice as 78% of fresh water.
Water is everywhere on Earth and is the only known substance that can naturally exist as a gas, liquid, and solid within the relatively small range of air temperatures and pressures found at the Earth's surface.
The notion that water is continually circulating from the ocean to the atmosphere to the land and back again to the ocean has interested scholars through most of recorded history.
earthobservatory.nasa.gov /Library/Water/water.html   (442 words)

  
 Global Water - Background
Permanent sources of clean, fresh water are needed in order to stop the drought/famine cycles that plague many regions of the world.
Relatively new water purification capabilities, especially from the use of reverse osmosis (RO) membranes, match the technical requirements of purifying polluted water by desalinating water and providing a physical barrier to microorganisms and a wide array of chemical contaminants, all in one stage.
However, Global Water’s concept of providing new and clean water supplies to withstand drought and alleviate the necessity to use polluted surface waters is a decidedly different focus from the normal relief effort today.
www.globalwater.org /background.htm   (1996 words)

  
 Human Appropriation of the World's Fresh Water Supply
Today, principal demands for fresh water are for irrigation, household and municipal water use, and industrial uses.
Nearly 70% of that fresh water is frozen in the icecaps of
Although water is seemingly abundant, the real issue is the amount of fresh water available.
www.globalchange.umich.edu /globalchange2/current/lectures/freshwater_supply/freshwater.html   (2031 words)

  
 FRESH WATER MANAGEMENT
Noting that disputes often led to conflict over fresh water supplies, he hoped the conference would provide leadership on conflict resolution mechanisms, adding "I do hope they will be able to come up with a set of tangible outputs that will be taken forward and make a real difference in many parts of the world".
While increasing fresh water shortages in almost every area of the world is felt more in arid and tropical regions today they would include all other regions in the future, near future.
He added that 'it is crucial to understand that fresh water is an essential element of life on earth.
www.pakistaneconomist.com /database1/cover/c2001-81.asp   (2701 words)

  
 Fresh Water Resources
The amount of fresh water is, of course, dependant on rainfall and this varies according to the geographic location of the island and climate conditions.
Even where the fresh water source is protected from pollution, tap water from urban systems is seldom safe to drink because of leaky pipes and negative water pressure during times of high use.
Water losses ranged from 30 to 50 percent and wasteful use of water by consumers were among the causes of water shortage and high cost of water and required serious and immediate attention.
www.unescap.org /mced2000/pacific/background/freshwater.htm   (1499 words)

  
 City Of Cambridge -
Water from Fresh Pond is purified at the new Walter J. Sullivan Water Purification Facility adjacent to the Pond, and pumped to Payson Park Reservoir in Belmont.
The Charles River, in contrast, was inter-tidal and was not a source of fresh water.
The small ponds we call Black's Nook and Little Fresh Pond were created from shallow coves in the larger Pond by gravel dikes, which were built to help prevent pollution and to serve as a bed for the road that encircled the Pond.
www.cambridgema.gov /CWD/wat_fp_geninfo.cfm   (344 words)

  
 Dushanbe International Fresh Water Forum
Rahmonov, the President of Tajikistan, expressed his hope that the Dushanbe Fresh Water Forum would be a platform for the countries of the world to share their views as to how to create the conditions needed to improve the management of water resources for next generations.
He also suggested to proclaim the International Decade of Fresh Water beginning from 2005 that would correspond to the MDGs set up to increase number of world's population with sustainable access to drinking water by 2015.
Working Group on preparation of the Dushanbe International Fresh Water Forum
www.freshwaterforum.org /index-eng.htm   (439 words)

  
 fresh water - Hutchinson encyclopedia article about fresh water
This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
encyclopedia.farlex.com /fresh+water   (118 words)

  
 marine
In the freshwater biome there are shallow water zones along the shore, an open water zone where light is insufficient for photosynthesis, a deep water zone which is less dense, and a bottom zone which is made of soft mud and silt.
The plants that dominate the freshwater biome are algae, water moss, and plant plankton.
Why is a lake said to be fresh water when it is connected to a salt water ocean?
lsb.syr.edu /projects/cyberzoo/freshwater.html   (441 words)

  
 Geography Awareness Week 2000 @ nationalgeographic.com
The more we learn about water, the better off we’ll be to meet the challenge of ensuring an adequate supply of fresh water to all Earth’s people.
Here’s the rub: Only about 3 percent of Earth’s water is fresh, and most of this water is frozen in icecaps and glaciers.
Here’s another rub: Some areas of the world have plenty of fresh water, and other areas have little.
www.nationalgeographic.com /gaw/frwater   (144 words)

  
 Fresh Water Wetlands
The water of a Bog is much more acidic than that of a Fen, due to the larger quantities of sphagnum moss and the more advanced process of decomposition in a Bog.
Marshes are subject to periodic flooding, and the water level can change drastically in a short amount of time.
It is fed mainly by rainstorms and snowmelt, and loses most of its water through seepage and evaporation.
digitalsportsman.com /wetlands/fresh.htm   (256 words)

  
 Fresh Water
Some investigators list up to 1/3 of fresh water fish species as in danger of extinction.
The Ogallala Aquifer in the central of US which waters 1/5 of the irrigated land in the U.S., is being mined at a rate of 12 billion cubic meters per year, a quantity equivalent to 1/6 of the annual flow of the Colorado River.
The water table in the northern plains of China where 40% of the country's grain is produced, is dropping at between 1-1.5 meters per year.
www.whole-systems.org /water.html   (1123 words)

  
 United Nations Division for Sustainable Development- Sustainable Development Issues - Freshwaster
The year 2003 was earlier chosen by the General Assembly as the International Year of Freshwater.
It called upon the international community to combat desertification and mitigate the effects of drought and floods; to develop integrated water resources management and water efficiency plans by 2005; and to support developing countries and countries with economies in transition in their efforts to monitor and assess the quantity and quality of water resources.
Most recently, in 2005, at its thirteenth session, the Commission explored policy options for furthering implementation on the issues of water and sanitation as well as on human settlements as reflected in its decision.
www.un.org /esa/sustdev/sdissues/water/water.htm   (469 words)

  
 Keeping your Fresh & Salt Water Tanks Clear
For example, black mollies are actually a salt water fish which can survive in a fresh water environment.
This same method can be used with fresh water tanks however we use plants instead of mollies.
Since we never want to go back to stage one which is "new" water and the water is at all times until the day it is drained and put on a shelf in your garage trying to become bad, we are in a quandary as to how to maintain "established" water.
www.animalsunlimited.net /fresh.htm   (723 words)

  
 Salinity - Dissolved Salts, Measuring Salinity
When we measure the salinity of water, we look at how much dissolved salt is in the water, or the concentration of salt in the water.
Ocean water has a salinity that is approximately 35,000 ppm.
High school students use the CTD recorder to measure salinity, temperature and depth of the water in the Lafayette River which is a part of Chesapeake Bay.
www.windows.ucar.edu /tour/link=/earth/Water/dissolved_salts.html   (280 words)

  
 KOA Kompass - How Fresh is your RV Fresh Water System?
How Fresh is your RV Fresh Water System?
This is the water tank that you drink from and the water you use to wash dishes and take showers with.
Water filters do not purify the water but they can control and remove bacteria, lead and other dangerous contaminants found in drinking water.
www.koa.com /updates/2004july/rv101.htm   (1135 words)

  
 CBC News Indepth: Water
Of all the water on our planet, 97.5 per cent is sea water and three-quarters of the remaining 2.5 per cent is locked in polar ice caps.
Water shipped halfway around the world will only be affordable to the privileged and will deepen inequities between rich and poor.
The environmentalists successfully argued that allowing Gisborne Lake water to be sold in bulk would make Canadian water a "commodity" and thus subject to the terms and conditions of GATT and NAFTA.
www.cbc.ca /news/background/water   (1147 words)

  
 The Wonder Of Water - Celebrating Canada's Fresh Water Resources
The proclamation of the UN “Water for Life” Decade presents a huge opportunity to build on the partnerships and successful programming developed during the United Nations International Year of Fresh Water and Wonder of Water initiative in Canada.
The year 2003 was designated as the United Nations International Year of Fresh Water...
The Wonder Of Water - Celebrating Canada's Fresh Water Resources
www.wonderofwater.ca   (661 words)

  
 Standing Fresh Water
Standing fresh waters are a highly fluctuating resource, both over the course of a year and over the longer term.
Standing fresh waters are a rich wildlife habitat and as such are an important resource for biodiversity.
There is great potential for the protection, restoration and enhancement of standing fresh waters in Sussex.
www.biodiversitysussex.org /freshwater.htm   (4049 words)

  
 The Big Picture - Fresh Water
The expansion of industry to the developing world, in addition to local human contamination of fresh water supplies, is making it more difficult to maintain water quality.” 6
“The Hidden Fresh Water Crises”, World Watch 2000, www.worldwatch.org
Approximately 20 per cent of the world’s freshwater fish species have become extinct, threatened or endangered in recent decades.
www.theglobaleducationproject.org /fresh-water.php   (490 words)

  
 Managing water for peace in the Middle East
To meet the water demands of the increasing population and water short regions in Saudi Arabia, the Saline Water Conversion Office (SWCO) under the Ministry of Agriculture and Water was made responsible for providing fresh water by desalination of seawater in 1965.
With its increasing responsibilities to provide fresh water, the SWCO was changed in 1974 into an independent corporation, the Saline Water Conversion Corporation (SWCC), which then developed an elaborate plan to construct dual-purpose plants on both the east and west coasts of the kingdom.
By the end of the 1980s the total production of fresh water was estimated to have been increased to 2.17 million m³ (572 million gal.) of fresh water per day and 4,079 MW of electric power by the addition of six cogeneration plants (SWCC 1988).
www.unu.edu /unupress/unupbooks/80858e/80858E09.htm   (2643 words)

  
 Biomes of the World - TeachersFirst
The fresh water of the earth is contained in lakes, ponds, rivers and streams.
Rivers and streams are moving bodies of fresh water which usually originate in mountains and come from melting ice or ground water and eventually terminate in oceans.
Lakes are large bodies of freshwater surrounded by land, while ponds are smaller bodies of water surrounded by land.
www.teachersfirst.com /lessons/biomes/fresh.html   (171 words)

  
 Reliable Fresh Water - Survival in the 21st Century
Even clear and apparently fresh water may be polluted with the disease causing pathogens.
Food and water borne disease are the number one cause of illness in travelers, according to the Center For Disease Control and Prevention (CDC), and "traveler's diarrhea" is the most frequent health problem.
Two iodine tablets in one liter of water were shown to kill almost 3 log (99.8%) of Giardia cysts in a lab brew of cold, somewhat turbid water.
y2kchaos.entrewave.com /view/y2kchaos/s35p722.htm   (7133 words)

  
 WATER: Fresh
About point nine percent of the earth's fresh water is, is tied up in permafrost, as a swamp moisture or, or permanent soil moisture.
"It's less than one hundredth of one percent of the earth's water is actually available for all of the biodiversity that lives in fresh water.
We asked her of that 2.5 percent, how much fresh water is available to us for drinking and other uses?
www.pulseplanet.com /archive/Jan00/2057.html   (332 words)

  
 TIME.com: Global Business, August 2001
Although bottled water is already a $30 billion global industry, the technological challenge of shipping bulk quantities of freshwater between distant points and distributing it to customers has so far stumped some major would-be players.
Compared with the costs of shipping freshwater by sea, "it's still cheaper to get freshwater by other means, even by desalinization of seawater," admits Turner of Waterbank.com.
Just three months ago, a Greek company, Aquarius Water Transportation, was in Houston trying to interest clients in pumping North American water into rafts the size of football fields and towing them to parched locales around the world--a method Aquarius uses to haul water around the Aegean.
www.time.com /time/global/august/hotcom.html   (1265 words)

  
 Fresh Water: UNESCO
Water resources and ecosystems’ is the principal priority in UNESCO’s Natural Sciences Sector in 2002-2003, reflecting the widely held view that freshwater resources and their integrated management is one of the most critical environment and development issues of the coming decades.
UN-wide assessment of freshwater resources is underway, which will culminate in the publication of the first World Water Development Report in early 2003.
In its present phase (IHP-VI, 2002-2007), the focus is on ‘Water interactions: systems at risk and social challenges’ and on a people-oriented approach to the management and development of water resources.
portal.unesco.org /en/ev.php-URL_ID=2483&URL_DO=DO_TOPIC&URL_SECTION=201.html   (264 words)

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