It refers to the preservation of fresh drinkable (potable) water and not sea water. Although the Earth contains about 71% water in total on the crust, most of it is salty water which can not be used to drink. A lot of the drinking water is also in underground sources such as underground lakes and natural aquifers. It takes technology and energy to obtain this water. Both of these add to the carbon cost of human use of the Earth. Any drinking water that we use must also be dealt with after it comes out of our bodies which means after it enters a sewage as black water or grey water. In less economically developed countries (formerlly known as the "third world") water can be hard to come by and may be many miles away from where it is needed. In the more economically developed countries we tend to not understand the issues involved because we can turn on a tap and get clean fresh water and flush the toilet to gt rid of the waste.
"Photes" is not a word recognized in the dictionary. I suspect it is a typo. Perhaps you meant photos.
The address of the Delaware Water Gap Station Preservation Partnership Inc is: Po Box 633, Delaware Water Gap, PA 18327-0633
Preservation of habitat basically involves conserving an area of land or water to protect all its plant, animal, and other inhabitants.
Sodium chloride absorb water and microorganisms die without water.
Dehydration is removing water from food- drying it.
The address of the Water Tower And Park Preservation Society Incorporated is: 3500 Russell Blvd, Saint Louis, MO 63104-1549
Conservation: The action of conserving something, in particular. Preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife.
The address of the Wisconsin Preservation Fund is: 1000 North Water Street, Milwaukee, WI 53202
in the water
Sodium chloride destroy microorganisms absorbing all the water.
stuff! process to preserve bodies, changes water and fat to plastic
Drying is a method of food preservation that works by removing water from the food