how does water purify itself naturally?
350480
forest fires which occur through nature leave a bed of charcoal which when water passes through filters it. when combined with evaporation, the now filtered water can be pushed via the jet stream to neighboring regions.
7952
If your serious your answer is... To dilute water you must use Heavy water,  Often referred to as Atomic water. Which is water with molecules removed   Oh dont forget the magic dust
596391
There are many different ways to make questionable water drinkable.\n\nBoiling- Bring it to a rolling boil (might want to leave it for 2 minutes just to be sure)\n\nChemical treatment- Outdoor stores carry products, follow package instructions\n\nFiltration- Water filters don't usually filter out virus' so chemical treatment is usually still needed\n\nUV light treatment- Special Lights are now on the market that can treat water in short time (See: http://www.bentgear.com/product_info.php?cPath=21_53_54&products_id=385)\n\nThere are other but not as common methods such as a machine that can produce chemicals that kill bacteria. \nHope I helped!
68297
well without it their cells would shrivel up and die...\n\nwater is essential to dissolve most minerals and compounds in because it is a polar molecule and things are easily dissolved in it. the body takes advantage of these properties of water and our living system is based off of the properties of water and most of our bodies are actually made up of water.
327281
Water is created by burning hydrogen.
838619
They would immediately become... LESS THIRSTY!\n\nHeh.  Deionized water is just a fancy name for extremely pure water.  It has been so thoroughly cleaned by filtration and iron exchange that it has a resistance to electric current of 18 megaohms... much greater than ordinary tap water.  It's got no negative impacts on the human body (well, I suppose you could drown in it) so you could drink it, bathe in it, use it for cooking, etc.  This would be a very expensive way to get your drink on, but it won't hurt you.
924300
The best thing to use is a water filter. They get rid of temporary hardness that causes scale, along with chlorine, lead, aluminium, and other trace metals. However, they do not purify water, best to buy a packet of water purifiers from the chemist.
303081
Purify it. And then have it in a closed system where nothing can get to it
1167923
water is generated by combining Hydrogen and Oxygen in a retort and applying eletrical spark.\nCoolant and pharmaceuticals labs
135430
Well, on a space ship the water in urine actually is recycled, but the waste products are removed first.  No one wants to drink urea (the yellow part), but the water's just water.  It might seem weird to think about, but the water portion of urine is recycled on a global scale too.  When you flush the toilet, it goes to a sewage treatment plant, and then the treated sewage is dumped some where.  Eventually, the water evaporates, and then comes back in the form of rain.  Chances are that every molecule of the water you drink has been through the body of some person or animal somewhere at least once.\n\nAs for recycling feces, it's not practical.  The waste that's excreted is excreted for a reason.  There's little or no valuable nutrients left, and it's teaming with harmful bacteria.  However, like water, the atoms in feces are recycled.  Wherever it ends up, bacteria and fungi will decompose the compounds in feces, and they will end up in the soil.  Some of these atoms in the soil are then absorbed by plants.  So there are probably former feces atoms in the cocoa beans that were used to make your brownies.  Not quite as direct as you were imagining, but on some level it does happen.
980576
Clean water has the same ph as human blood and milk.  Depends on the acid/alkaline balance of the contaminant. water is the best solvent and carries traces of everything it comes into contact with.
615923
you either urinate it out or you crap it out.  The water content can also leave your body by your poars in your skin and it evaporates into the air.
626673
I think the water is the end result of a chemical reaction. Water is not combustible, and never will be. It is a life giving force, unlike fire. I found out that bleach and this other cleaning liquid turn into nerve gas when mixed together. I don't have a good explaination for why this happens. It just does.
1039901
B.  As the matter settles in the bottom of the basin.\n\n"There are a wide range of techniques that can be used to remove the fine solids, micro-organisms and some dissolved inorganic and organic materials. The choice of method will depend on the quality of the water being treated, the cost of the treatment process and the quality standards expected of the processed water" - wikipedia
552084
I assume this is based on the principle of Osmosis. I would like a bit more data before answering further.
87965
We never get new water here on earth..it's just recycled. The water cycle defined is "Transition and movement of water involving evaporation, transpiration, condensation, precipitation, percolation, runoff, and storage."\n\nWater falls in the form of precipitation (snow, rain, etc). Some of it seeps into the ground that makes up our water aquifers (perculation), some is in the form of runoff (rivers, streams), eventually water makes its way to lakes, ponds, oceans, etc and is stored. Some water is taken up by plants and is stored there. It leaves "storage" when the water evaporates and through transpiration in plants (plants lose water through their leaves which is why they seem especially prone to wilting on a hot windy day).\n\nCondensation is when water goes from a gaseous state back to a liquid state. An example of this putting your breath on a cold window or mirror and watching the water droplets form.\n\nHope this helped. It's a simplified explanation, but it will get you started.
626745
True. water is essential for the transport of nutrients within them, since it is the "universal solvent".